M4maths Suggestion Board

Suggestion Board Post your query related to m4maths

If you have any query and suggestion you can submit it here.

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Vikas Kumar 9 years AGO

Please anyone can tell me how to prepare for verbal test in elitmus.

Like? Yes (1) | No

Reply

Vikas Kumar 9 years AGO

Please anyone can give me elitmus pH test papers.

Like? Yes (1) | No

Reply

9 years ago

Congratulation Lenin,

It is our pleasure to announce that you are the winners of this week's puzzle question on M4maths with 86 points. Here's the scorecard.

Date - Point - Time

18/04/2016 - 15 - 08:43:12

19/04/2016 - 17 - 00:03:40

20/04/2016 - 15 - 00:24:28

21/04/2016 - 19 - 00:01:12

22/04/2016 - 20 - 00:00:49

Total - 86

Thanks
Team M4maths

Reply

akshay pathak 9 years AGO

1) only 1 is assumption
2) only 2 is assumption
3) both 1 and 2 are assumption
4) neither 1 and 2

though internet has made school homework easy and fun , it is misused with students by exchanging notes
1)internet is easy to use and source of internet
2)school should discourage the use of internet to do one's homework assignment

Like? Yes (1) | No (2)

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9 years ago

Congratulation Mrityunjay,

It is our pleasure to announce that you are the winners of last week's puzzle question on M4maths with 94 points. Here's the scorecard.

Date - Point

11/04/2016 - 20

12/04/2016 - 19

13/04/2016 - 19

14/04/2016 - 16

15/04/2016 - 20

Total - 94

Thanks
Team M4maths

Reply

kunal 9 years AGO

i have qusttion pleas explain this method
A NUMBER STARTS MULTIPLYING CONSCEUTIVE POSITIVE INTEGER STARTING FROM 20 HOW MANY INTEGES SHOULD BE MULTIPLY TO GET A NO WHICH WILL END 3 ZERO ??? PLEASE EXPLAIN IT

Like? Yes (1) | No

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Bandaru Chandra 9 years AGO

Hi everyone !
i am 2014 passed out still not getting job .
now i have core java ,htm5,css3,javascript coding knowledge .
please suggest me to get job in startup companies or others opportunities to get job.
where to fing startup jobs in bangalore.

Like? Yes (1) | No

Reply

shivani sharma 9 years AGO

Well i want to know how to prepare for elitmus for getting 85+ %ile...plz tell me for all three modules....waiting for reply...

Like? Yes (1) | No

Reply

gg 9 years AGO

My scores in amcat are Quantitative- 53.5%
Eng- 59.9%
Logical-65.4%
Computer science -96%
Computer Programming- 97%
Can I expect any interview calls from software companies....????

Like? Yes (1) | No

Reply

Sandra K A 9 years AGO

My Amcat score is
Computer Programming : 87.8 %ile
Electronics & Semiconductor Engineering : 83.5 %ileA
English : 90.3 %ile
Quantitative Ability : 43.1 %ile
Logical Ability : 61.7 %ile

Will i receive any call from good companies ?? Please tell me

Like? Yes (3) | No (1)

Reply

9 years ago

Congratulation Abhinav,

It is our pleasure to announce that you are the winners of this week's puzzle question on M4maths with 94 points. Here's the scorecard.

Date - Point

04/04/2016 - 16

05/04/2016 - 20

06/04/2016 - 18

07/04/2016 - 20

08/04/2016 - 20

Total - 94

Thanks
Team M4maths

Reply

PUNEET KUMAR 9 years AGO

√4-√4+√4-√4.....infinity plz solve

Like? Yes (1) | No

Reply

Sankararao 9 years AGO

thanks

Like? Yes (1) | No

Reply

Ashvinder Singh 9 years AGO

amcat preparation

Like? Yes (1) | No

Reply

soni 9 years AGO

IBM test paper 5th april bangalore

1) 1/2,5/4,2,11/4,,7/2,…..?
2) 4,2,-4,-8,-32,26,-156,….?
3) 2,1,3,4,3,5,6,5,7,8,….?
4) 2,8,3,27,4,64,5,125,6,216,…?
5) 588,196,471,157,345,115,495,165,585….?
6) 8.2,3.9,12.1,6.2,4.4,10.6,4.2,4.9,9.1,2.2,5.4…?
7) 4.2,7.2,11.4,6.1,9.1,15.2,3.8,6.8,10.6,5.7,8.7,…?
8) 1,-1,2,-6,2,-2,4,-12,3,…?
9) 2,3,4,9,8,27,…?
10) 11,17,-6,-13,24,30,-19,-26,20…?
11) 4,64,1,1,3,27,….?
12) 1.25,9,22.5,0.75,8.5,22,0.25,….?
13) 5,50,10,40,15,30,20,20,….?
14) 18,6,3,33,11,8,45,15,12,72,….?
15) 3/4,9/16,,1/2,1/4,1/3,1/9,2/3,4/9,1/4….?
16) 7,19,43,91,187,…?
17) 35,5,7,12,14,2,7,9,42,6,….?
18) 13,14,15,16,18,19,20,22,23,…?

Like? Yes (1) | No

Reply

Mahesh Kumar Baghel 9 years AGO

i great by using m4maths

Like? Yes (1) | No

Reply

kumari priyanka 9 years AGO

Like? Yes (1) | No

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9 years ago

Congratulation MOJUMDER,

It is our pleasure to announce that you are the winners of this week's puzzle question on M4maths with 89 points. Here's the scorecard.

Date - Point

28/03/2016 - 20

29/03/2016 - 15

30/03/2016 - 19

31/03/2016 - 16

01/03/2016 - 19

Total - 89

Thanks
Team M4maths

Reply

Gousulu K 9 years AGO

is it possible to do internshi to do in 2 nd year of b-tech

Like? Yes (1) | No (1)

Reply

Pritee Kumari 9 years AGO

I got interview call from CGI through Elitmus on 2nd mar there cleared apti n GD again on 5th marh cleared tech 1 n hr round..there they said ur nxt round will held at electronics city we will cl u...but till now I m waiting for there call..

Like? Yes (1) | No (1)

Reply

amar 9 years ago

they vl give you the call dont worry

Like? Yes (2) | No

akshay pathak 9 years ago

same here , still waiting for the call :(

Like? Yes (1) | No

Swagata Banerjee 9 years AGO

My AMCAT score is:
English- 88.5%
Quantitative ability- 58.6%
Logical ability- 42.2%
Com.programming- 55.1%
Do I have any chances for CTS or any other such IT company?

Like? Yes (2) | No (2)

Reply

9 years ago

Congratulation MOJUMDER,

It is our pleasure to announce that you are the winners of this week's puzzle question on M4maths with 92 points. Here's the scorecard.

Date - Point

21/03/2016 - 15

22/03/2016 - 19

23/03/2016 - 19

24/03/2016 - 19

25/03/2016 - 20

Total - 92

Thanks
Team M4maths

Reply

Md Arshad 9 years AGO

please help me with cocubes aptitude and technical programming related questions for FISERV IND PVT LTD.
please help me i have FISERV drive on april 2016...please anyone having the same share it with me on

email id - arsh6670@gmail.com

please help

Like? Yes (1) | No

Reply

Manisha Rani 9 years AGO

can anybody share capagemini written test questions plz..

Like? Yes (1) | No

Reply

Kumar Saurabh 9 years ago

pm @ks9918@gmail.com

Like? Yes (1) | No

Manisha Rani 9 years AGO

MIXTURE OF 40 LITRES OF SALT AND WATER CONTAINS 70%OF SALT.HOW MUCH WATER MUST BE ADDED TO DECREASE THE SALT PERCENTAGE TO 40%?

Like? Yes (3) | No

Reply

MOJUMDER 9 years ago

40 -> 7:10 -> 28 litres of salt and 12 litres of water. -> Let us take x... -> 28/(12+x) = 40:(100-40) => x =30. Answer

Like? Yes (2) | No

MD Parvez Sharif 9 years AGO

The cost ,in taka , of manufacturing X microwaves is 6000+300x taka. The amount received when selling these x microwaves is 700x taka.What is the least number of microwaves that must be manufactured and sold so that the net profit is tk 2400?

Like? Yes (1) | No

Reply

Rishu 9 years ago

21 microwaves

cp of X microwaves=6000+300x
sp of X microwaves=700x
sp-cp=profit
700x-(6000+300x)=2400
400x=8400
x=21
the least number of microwaves that must be manufactured and sold so that the net profit is tk 2400 is 21

Like? Yes (1) | No

wilson 9 years AGO

how could i know which company is recruiting through off campus when and where please suggest me

Like? Yes (1) | No

Reply

Priyanka 9 years AGO

I got a login mail from Infosys. But I am unable to login using the given user name and password. I had also given forgot password and got new password. But with that password also I am unable to login. I need a rely soon. Please

Like? Yes (1) | No

Reply

chaitalibanerjee 9 years AGO

NKA
ZPF
______
VX8K
RZX?*
NAPX**
--------------
NXFAKK
can anyone plz give its solution...this was exactly asked in 20th March,and question is as was asked in exam....

Like? Yes (2) | No

Reply

vijaykumar 9 years AGO

Can anybody tell me how to prepare for Tessolve Semiconductor written test

Like? Yes (1) | No

Reply

9 years ago

Congratulation MOJUMDER,

It is our pleasure to announce that you are the winners of this week's puzzle question on M4maths with 94 points. Here's the scorecard.

Date - Point

14/03/2016 - 20

15/03/2016 - 20

16/03/2016 - 20

17/03/2016 - 16

18/03/2016 - 18

Total - 94

Thanks
Team M4maths

Reply

Neeraj Singh Kushwaha 9 years AGO

2 red balls, 2 white balls, 2 black balls in how many ways they put in the 4 box such that no same color balls put in consecutive box ?
Whts the solution of this question send me please

Like? Yes (1) | No

Reply

Nirmala Chowday 9 years AGO

Plz can any one tell me how to prepare for elitmus test

Like? Yes (1) | No

Reply

sudarshan 9 years AGO

Anybody has remembered previous quotions asked in maventic company.reply the quotions and anwers.thanks in advance

Like? Yes (1) | No

Reply

Johnny 9 years AGO

A group of men decided to a job in 4 days. But since 20 men dropped out every day, the job completed at thr end of the 7th day .how many men were there at the beginning?

Like? Yes (3) | No

Reply

Rishu 9 years ago

140 men

let there were n men at the beginning
work done by n men in 1 day=1/4
work done by 1 men in 1 day=1/(4n)
according to question:
n/(4n)+(n-20)/(4n)+(n-40)/(4n)+(n-60)/(4n)+(n-80)/(4n)+(n-100)/(4n)+(n-120)/(4n)=1
7/4-[(20+40+60+80+100+120)/(4n]=1
3/4=105/n
n=140

Like? Yes (3) | No

Shwetha B H 9 years AGO

Hi these are my AMCAT scores..

Computer Programming 99.9 %
English 82.9 %
Computer Science 67.9 %
Quantitative Ability 24.3 %
Logical Ability 48 %

Its been 2 weeks no interview calls from them..
Is AMCAT of no use?

Like? Yes (1) | No (3)

Reply

Rishu 9 years ago

your quantitative and logical ability percentile is too low
you have to score 90+ percentile in these two sections to get interview calls
Computer Programming and optional module does not matter much

Like? Yes (6) | No

Prakash kumar 9 years AGO

Series - 7 , 4 , 5, 9 , 20 , ?

Like? Yes (4) | No

Reply

MOJUMDER 9 years ago

7*0.5=3.5+0.5=4;
4*1=4+1=5;
5*1.5=7.5+1.5=9;
9*2=18+2=20;
Similarly, 20*2.5=50+2.5=52.5.

Like? Yes (5) | No

prakash 9 years AGO

93. CTPN : DSQM :: MUSK? please solve this problem

Like? Yes (1) | No

Reply

Rishu 9 years ago

NTTJ

C+1=D
T-1=S
P+1=Q
N-1=M

M+1=N
U-1=T
S+1=T
K-1=J

Like? Yes (2) | No

9 years ago

Congratulation ABHINAV,

It is our pleasure to announce that you are the winners of this week's puzzle question on M4maths with 94 points. Here's the scorecard.

This week there was a very close competition between Abhinav and Mukund and the time difference was only 1 second. Best of luck Mukund.

Date - Point - Time (Mukund - Point - Time)

07/03/2016 - 17 - 00:03:33 (19 - 00:01:50)

08/03/2016 - 20 - 00:00:56 (17 - 00:03:48)

09/03/2016 - 19 - 00:01:13 (19 - 00:01:03)

10/03/2016 - 18 - 00:02:26 (20 - 00:00:40)

11/03/2016 - 20 - 00:00:47 (19 - 00:01:35)

Total - 94 - 8 Minute, 55 Second (8 Minute, 56 Second)

Thanks
Team M4maths

Reply

vignesh 9 years AGO

Did any one get the joining date and location. For those who attended interview on Feb 4 and 5

Like? Yes (1) | No

Reply

Neel 9 years AGO

good

Like? Yes (1) | No

Reply

lokavarapuvijayalakshmi 9 years AGO

How can I use this m4maths suggestion board?
because I am new to this web site

Like? Yes (1) | No

Reply

lokavarapuvijayalakshmi 9 years AGO

how can I use this m4maths suggestion boagd ?

Like? Yes (1) | No

Reply

Kamisetty Archana 9 years AGO

can any one know when will be the interview of tcs?

Like? Yes (1) | No

Reply

Kamisetty Archana 9 years AGO

hii
frds
I hav cleared tcs written held on 2nd march2016
thanks to m4maths

Like? Yes (1) | No

Reply

UDITA AMIN 9 years AGO

In which month will tcs conduct its next off campus drive for 2016 batch?

Like? Yes (5) | No

Reply

v.shlpa 9 years AGO

i have syntel drive please suggest me how will i prepared

Like? Yes (1) | No

Reply

9 years ago

Congratulation Janarthanan Ram,

It is our pleasure to announce that you are the winners of this week's puzzle question on M4maths with 92 points. Here's the score card.

Date - Point

29/02/2016 - 20

01/03/2016 - 19

02/03/2016 - 20

03/03/2016 - 16

04/03/2016 - 17

Total - 92

Thanks
Team M4maths

Reply

hemavathi pandillapalli 9 years AGO

hi friends i am really happy to clear tcs written on 2nd mar lot of thanks for m4 maths

Like? Yes (1) | No

Reply

pramit 9 years AGO

thanks m4maths.cleared the apti

Like? Yes (1) | No

Reply

Rishu 9 years ago

me too

Like? Yes (2) | No

Rituparna Nag 9 years AGO

when will the result of tcs campus drive round 1 be published?

Like? Yes (1) | No

Reply

Deepesh Malviya 9 years ago

Last time result of 2nd DEC test was declared on 8 DEC. Same chances now.

Like? Yes (1) | No

Sam 9 years AGO

I have attended Tcs of campus on 2 march..... Paper was little bit easy.I have attempted 20 questions in that 17 I have accurately done.is there any chances to select

Like? Yes (1) | No

Reply

varalakshmi 9 years AGO

I am from ECE .if anybody know the efftronics written test pattern please tell me

Like? Yes (1) | No

Reply

renu 9 years AGO

10 litres of water added to 50 litres of milk it's cost is 16 rs. Find cost price of mixture

Like? Yes (1) | No

Reply

sudarshan 9 years AGO

Please I m getting tensed since from yesterday evening...... Is there any chances to clear... And wat will be the cutoff of tcs in off campus

Like? Yes (1) | No

Reply

Deepesh Malviya 9 years ago

Questions were very easy....cutoff should be 20-22

Like? Yes (1) | No

sudarshan 9 years AGO

I have attended Tcs of campus on 2 march..... Paper was little bit easy.I have attempted 20 questions in that 16 I have accurately done.is there any chances to select

Like? Yes (1) | No

Reply

Deepesh Malviya 9 years AGO

Is marked answer which is to be reviewed considered in marks totalling?

Like? Yes (1) | No (1)

Reply

ABHINAV PUSHPAM 9 years ago

Yes.. It is considered

Like? Yes (2) | No

prasanna 9 years AGO

does our exam get cancelled if email writing contains less than 50 words?

Like? Yes (1) | No

Reply

madhavi 9 years AGO

The number should be listed From 1 to 20.
Sum of each adjacent pair adjecent pair should be a prime number

20,3,16,A,4,B,12,C,10,7,6,D,2,17,14,9,8,5,18,E

What is the value of D?
optn
1. 13
2.11
3.1
4.3

My ans is 11

What is yours?

Like? Yes (1) | No

Reply

stalin 9 years AGO

i have attended 24/28 questions of which 3 remaining are dummy and also 1/2 star question and other is dummy question. What is my chance and i didnt maintain my word count as it was 49 or 50 just. ? Is it will be considered ?

Like? Yes (1) | No

Reply

sushovan mallick 9 years AGO

hello anybody tell me if i signed in with different name. what will happen? like they told anju and i did anuj.

Like? Yes (1) | No

Reply

Deepesh Malviya 9 years ago

Marks will be cut but chances are still alive.

Like? Yes (1) | No

Ravi 9 years AGO

I have attempted total 22 questions.
Out of which 21(normal) question are correct.
But 1 star marked question answered incorrect.
Is there any chance??

Like? Yes (1) | No

Reply

DEEPAK KUMAR 9 years AGO

hello
I have attended the TCS off campus drive today and I have attempted 24 correct solutions. How much is the chance that I will clear it??

Like? Yes (1) | No

Reply

Mrunal Shah 9 years AGO

I attempted 25 questions, out of which 1 is a star question. Are their any chance of going to further round ?

Like? Yes (1) | No

Reply

vaishnavi 9 years AGO

today on march 2nd i attend tcs offcampus drive .i wrote email writing but i did not saved the answer and automatially it submitted .so it is evaluated or not please give reply

Like? Yes (1) | No

Reply

Prashant 9 years AGO

If A=0, B=1, C=2, ...,Y=24, Z=25. then what is ONE + ONE =?

Like? Yes (1) | No

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Richa 9 years AGO

Please help how to solve question like this one.
N=99^3-36^3-63^3,how many factors does N Have?
Options are
51
96
128
192

Like? Yes (1) | No

Reply

PRAGYA GUPTA 9 years AGO

how to solve this?

XCL * ZCB
---------------
LZXP
SZRR
CCZB
-----------
ZDKBKP

Like? Yes (1) | No

Reply

Fairlin Jenefa 9 years AGO

Hey guys !!!!
All the very best
Do your BEST . My wishes to all who have drive on tomorrow.
TCS is in YOUR hand...

Like? Yes (1) | No

Reply

abhishek singh 9 years AGO

i got 96 %tilein verbal
94%tile in problem solving
48%tile in quants
what are my chances ?
sincere reply is appriciated .
thanks.

reply asap

Like? Yes (1) | No

Reply

Abha gupta 9 years AGO

ab+a+b = 259
bc +b +c =220
ca+a +c =339
Find a +b +c?

Like? Yes (1) | No

Reply

shivakumaran 9 years AGO

Need answer for below mentioned question:
A very special island inhabited only by knaves. Knights always tell the truth and known always lie. you meet four inhabitants: usha, Eesha, nisha and asha.usha tells you’eesha is a knave’.Eesha tells you’asha is a knave’.nisha clamis,’Eeasha is a knight and asha is a knave.’asha tells you.’I and nisha are different.
Identify the knave(s)

Like? Yes (2) | No

Reply

surya 9 years AGO

nothing

Like? Yes (1) | No

Reply

MRITUNJAY 9 years AGO

Dear sir
In this week I have also got 92 point.what is the condition behind giving the prize for the same number?In the application my position is in the top,why I have not get the prize?please give me some reason for the same.

Thanks

Like? Yes (2) | No

Reply

Rishu 9 years ago

ladies first

Like? Yes (2) | No

9 years ago

Congratulation Namrata Gupta,

It is our pleasure to announce that you are the winners of this week's puzzle question on M4maths with 92 points. Here's the score card.

Date - Point -Time

22/02/2016 - 18 - 00:02:08

23/02/2016 - 20 - 00:00:52

24/02/2016 - 15 - 00:17:54

25/02/2016 - 20 - 00:00:52

26/02/2016 - 19 - 00:01:21

Total - 92

Thanks
Team M4maths

Reply

Rahul Rajak 9 years AGO

Hello Sir...
I am from b.tech 2016 batch...I have 74 in 10th,59% in 12th(aggregate) from ISC board...in B.Tech till now 7.5...I will eligible for TCS offcampus drive......???.....pls reply Sir.....Thank you..

Like? Yes (1) | No

Reply

Debjyoti Sarkar 9 years AGO

33*333*3333=? shortcut method for this ?

Like? Yes (1) | No

Reply

shireesha 9 years AGO

Plz can any one tell me how to prepare for elitmus test

Like? Yes (1) | No (1)

Reply

RAVI TEJA 9 years ago

solve quant as much as possible. attempt verbal section first (its easy).. for quant refer arun sharma book.

Like? Yes (1) | No (1)

vikaskumar jaisal 9 years AGO

how to solve
3164*3154

Like? Yes (1) | No

Reply

Priya Gupta 9 years AGO

Which of the sets has higher standard deviation?

Like? Yes (1) | No (1)

Reply

Fang Qi 9 years AGO

Like? Yes (1) | No

Reply

9 years ago

Congratulation Namrata Gupta,

It is our pleasure to announce that you are the winners of this week's puzzle question on M4maths with 92 points. Here's the score card.

Date - Point

15/02/2016 - 17

16/02/2016 - 20

17/02/2016 - 17

18/02/2016 - 20

19/02/2016 - 18

Total - 92

Thanks
Team M4maths

Reply

Smita kumari 9 years AGO

anyone plz help me how to prepare for elitmus xam

Like? Yes (1) | No

Reply

hruday 9 years AGO

I need tcs previous off campus papers I have drive.can you some email writing tips
Thanks in advance

Like? Yes (3) | No

Reply

Harrry 9 years AGO

How to delete a submitted question ?

Like? Yes (2) | No

Reply

Vaishnavi P Agarkathe 9 years AGO

hi guys,
i need capegemini placement papers........please send me.
my mail id is:agarkathevaishnavi93@gmail.com

Like? Yes (2) | No

Reply

sai prasad 9 years AGO

hai guys,
i need CGI and Ericssson placement papers.
if u any previous papers... please send me.
my mail id is: saiprasad11490@gmail.com

Like? Yes (2) | No

Reply

Srestho Nath 9 years AGO

my amcat scores are ENGLISH -99.2 PERCENTILE
COMPUTER PROGRAMMING- 90.1 PERCENTILE
QUANTATIVE APTITUDE -43.2 PERCENTILE
LOGICAL ABILITY -33.2 PERCENTILE
COMPUTER SCIENCE -60 PERCENTILE..
will i get any call??

Like? Yes (2) | No

Reply

RAVI TEJA 9 years ago

I hope u will get but if u can improve ur quant and logical scores then u have a fair chance.

Like? Yes (1) | No

(0309993) 9 years AGO

WHICH OF THE FOLLOWING CAN BE INHERITED BY A DERIVED CLASS FROM BASE CLASS?
a) data member
b)member functions
c)constructor and deconstructor
d)data member and member function

Like? Yes (2) | No (1)

Reply

MOJUMDER 9 years ago

d)data member and member function

Like? Yes (3) | No

paras 9 years AGO

Consider 5 boxes 1 to 5 each box is
Colored with either black or blue.find the probability of selecting two boxes having different color. Boxes of same color are identical.
Asked in elitmus on 14 feb

Like? Yes (3) | No

Reply

RAVI TEJA 9 years ago

was there a option 6/5 ? if yes then that wud be my answer.

Like? Yes (1) | No

paras 9 years AGO

One of the students who___ full marks ___ john.
a) score, is b)score, are c)scores, is
d)scores are
Asked in elitmus 14 feb

Like? Yes (4) | No (1)

Reply

MOJUMDER 9 years ago

a) score, is

Like? Yes (2) | No

PRAGYA GUPTA 9 years AGO

how to solve it?

Like? Yes (1) | No

Reply

PRAGYA GUPTA 9 years AGO

XCL * ZCB
---------------
LZXP
SZRR
CCZB
-----------
ZDKBKP

Like? Yes (3) | No

Reply

kamlesh kumar mehta 9 years AGO

1>What percent of selling price would be 34 % of cost price if gross profit is 26 % of the selling price?
A) 17.16
B) 74
c) 25.16
D) 88.40

Like? Yes (1) | No

Reply

Rishu 9 years ago

ans is 25.16%

let cp=x & sp=y
x=y-0.26y
x=0.74y
0.34x=0.34*0.74y
0.34x=0.2516y

Like? Yes (1) | No (1)

sajja pavan 9 years AGO

Is quant verbal and logical score is enough for a good job or we need a good score in optional module also?? May I knw

Like? Yes (3) | No

Reply

Yogapriya.V 9 years AGO

how many numbers are there from 1 to 80 ( including 1and 80) such that there reciprocal is non terminating.

Like? Yes (2) | No (1)

Reply

Rishu 9 years ago

ans is 39

number of odd numbers from 1 to 80
that is odd numbers from 3 to 79
79=3+(n-1)2
79=3+2n-2
n=39

Like? Yes (1) | No (3)

Rishu 9 years ago

66
multiples of all prime numbers from 3 to 80 except 5
79,73,71,67,61,59,53,47,43,41….. =10
(37,74),(31,62),(29,58)….. =2*3=6
(23,46,69)….. =3
(19,38,57,76),(17,34,51,68)….. =4*2=8
(13,26,39,52,65,78)….. =6
(11,22,33,44,55,66,77,)….. =7
(7,14,21,28,35,42,49,56,63,70)….. =10
(3,6,9,12,15,18,24,27,30,36,45,48,54,60,72,75)….. =16
Total=10+6+3+8+6+7+10+16=66

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Rishu 9 years ago

66 numbers

total number of numbers from 1 to 80=80
reciprocal of 1 is 1
numbers whose reciprocal is terminating have prime factors consisting of 2 or 5 or both only
numbers whose prime factors are only 2: 2,4,8,16,32,64
numbers whose prime factors are only 5: 5,25
numbers whose prime factors are only 2&5: 10,20,40,50,80
numbers from 1 to 80 whose reciprocal is terminating are: 1,2,4,5,8,10,16,20,24,32,40,50,64,80
so there are 14 numbers from 1 to 80 whose reciprocal is terminating
thus total numbers of numbers from 1 to 80 whose reciprocal is non terminating are 80-14=66

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9 years ago

Congratulation JANARTHANAN RAM,

It is our pleasure to announce that you are the winners of this week's puzzle question on M4maths with 89 points. Here's the score card.

Date - Point

08/02/2016 - 20

09/02/2016 - 19

10/02/2016 - 19

11/02/2016 - 20

12/02/2016 - 15

Total - 93

Thanks
Team M4maths

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Saikat Chakraborty 9 years AGO

in how many ways we can arrange the word VALENTINE so tht L always comes before V?

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BANU VENKATESH 9 years AGO

how to change mobile number

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pavan 9 years AGO

The time required for completing 3 tasks:type-1,type-2,type-3,by three carpenters is given in the table below.time specified in the table is for manufacturing single unit.

c1 c2 c3(c=carpenter)

type1 3 2 5

type2 6 5 4

type3 5 5 6

All the three carpenters start working simultaneously on one task each,with an objective to finish all the tasks as early as they can

1.C1 should work on:
A.Type1 B.Type2 c.Type3 D.none of the above

2.C3 should work on:
A.Type1 B.Type2 c.Type3 D.can't say

3.In how many hours can the entire work be finished?
A.4hr B.5Hr C.6hr D.7hr

4.In how many hours can 5 units of each type be prepared?
A.55hr B.25hr C.35hr D.10hr

5.If c2 is ristricted to prepare only Type-3 ,then c1 should work on:

A.Type1 B.Type2 c.Type3 D.can't say

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Rishu 9 years ago

1.c
2.b
3.b
4.b
5.a

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