Users Discussion Board

KokilA 8 years ago

In a staircase , there are 10 steps . A child is attempting to climb the staircase. Each time, she can either make 1 or 2 steps. In how many different ways can she climb the staircase?

option
a)10 b)21 c)26 d)None of these

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Yashi Das 8 years ago

Use fibonnacci series, with starting two terms as 1, 2. So next terms are 3, 5, 8, 13, 21, 34, 55, 89. Answer is 89.
So ans is option d

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banooth usha 8 years ago

answer fo above question is 10.

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ramya 8 years ago

no of zeroes in 11*22*33484844943

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Krunal M Mendapara 8 years ago

in website all paper and his trick is best...

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muthulakshmi 8 years ago

The population of a village is 10000. In one year, male population increase by 6% and female population by 4%. If population at the end of the year is 10520, find size of male population in the village (originally).

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Rishu 8 years ago

6000

let total number of male in the village be x
then total number of female in the village=10000-x
according to question:
1.06x+1.04(10000-x)=10520
1.06x+10400-1.04x=10520
0.02x=120
x=120/0.02=6000
thus size of male population in the village is 6000 (originally)

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NANDA KUMAR 8 years ago

please answer this question........

A circular cylinder of internal diameter 8cm and height 10cm contain water to a depth of 6cm.Two solid lead sphere each of diameter 4cm are placed in it.Find height by which water level rises.
a)1cm
b)0cm
c)2cm
d)1 1/3 cm

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Rishu 8 years ago

d)1 1/3cm

volume of water=pi*(4^2)*6=96pi cubic cm
volume of solid lead sphere=(4/3)*pi*(2^3)=(32/3)pi cubic cm
total volume of water with two solid sphere=96pi+2*(32/3)pi=(352/3)pi cubic cm
pi*(4^2)*h=(352/3)pi
h=22/3
height by which water level rises=22/3-6=4/3=1 1/3cm

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~Sandeep~ 8 years ago

" Do not linger to gather flowers to keep them, but walk on, for flowers will keep themselves blooming all your way "

Reply Like? Yes (5) | No

lakshmi 8 years ago

9. All faces of a cube with an eight - meter edge are painted red. If the cube is cut into smaller cubes with a two - meter edge, how many of the two meter cubes have paint on exactly one face?

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Rishu 8 years ago

24 cubes

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raji 8 years ago

hiii every one dis is raji

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Prashi 8 years ago

In this question A^B means A raised to the power of B.
Let F(X)=1+X+X^2+......X^6. The remainder when F(X^7) is divided by F(X) is ?

Reply Like? Yes (1) | No

Pradeep 8 years ago

Cost of two watches are in the ratio of 16:23. At present the cost of first watch increased by 100 and that of second by Rs 477. Now their ratio of the cost is 11:20. What were the initial prices of two watches ?

Reply Like? Yes (1) | No

Devendra Marghade 8 years ago

Rs. 775.4 , 1114.64

If present initial prices or costs of two watches are 16x and 23x respectively, then
(16x+100) / (23x+477) =11/20
320x+2000 =253x+5247 , x=3247/67
So initial prices are 16x=16*3247/67=775.4 and 23x=23*3247/67=1114.64

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Pradeep 8 years ago

Reply Like? Yes (2) | No

Nagalakshmi 8 years ago

Roy is now 4 years older than Erik and half of that amount older than Iris. If in 2 years, Roy will be twice as old as Erik, then in 2 years what would be Roy’s age multiplied by Iris’s age?

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Rahul Rajak 8 years ago

Hello Friends...
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..

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Rishu 8 years ago

no u have to have 60% throughout in 1st attempt irrespective of board
u can apply for wipro they demand 60% in 10th, 50% in 12th and 65% in btech

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v.kathirresh to kannya 8 years ago

hiiiiiiiiiiiiiiiii

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Gugulothu vijaykumar 8 years ago

hai friends how are you

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B RUTH ANGEL 6 years ago

A alone can do 1/4th of the work in 2 days. B alone can do 2/3th of the work in 4 days. if all the three work together, they can complete it in 3 days so what part of the work will be completed by C in 2 days
.please answer to this question

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ayush bagga 8 years ago

How many 15 rs , 1 rs and 25 paise coin will make 100 rs and number of coins should also be equal to 100 ?

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Devendra Marghade 8 years ago

3 ,41, 56

If number of coins of 15 Rs=x, 1 Rs=y and 25 paise=z, then
15x + y + (z/4) =100 ---(i) &
x + y+ z= 100 ---(ii)
On subtracting (ii) from (i), 14x+(z/4)-z =0 or x=3z/56
For x to be positive and for minimum value of z=56, x=3, so y=41

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ankit 8 years ago

HEY friends thanks for sharing placement questions.give your valuable suggesion and tips who has clear aptitude test because we are going to appear in off campus drive on 2nd of march....thnku

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Saikat Chakraborty 8 years ago

Hi..Guys. I will be sitting for co cubes exam next month. Is there anyone who gave co cubes previously ? Well I would like to know about the coding section in where we have to run a program in a language of owns choice. Basic idea on type of codes given. Is it hard ??

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ABHIRUCHI SHARMA 8 years ago

The compound interest on a certain sum for 2 years is Rs 40.80 and the simple interest is Rs. 40.Find the rate p.c. ?

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Rishu 8 years ago

4% p.a.

pr(2)/100=40
p=2000/r.....(1)

p[(1+r/100)^2-1]=40.80
p[(100+r)^2/10000-1]=40.80
p[(10000+r^2+200r)/10000-1]=40.80
p[(r^2+200r)/10000]=40.80
(2000/r)[(r^2+200r)/10000]=40.80.....from(1)
(2000r+400000)/10000=40.80
2000(r+200)=408000
(r+200)=204
r=4

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vipin pandey to vfzdfz 8 years ago

r u not selected :B

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L.ANANDA KUMAR to JANARTHANAN RAM 8 years ago

i am anand from madurai.i am doing final year engineering. i need your contact mail id for some clarification.please cocidered me

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JANARTHANAN RAM 8 years ago

For any clarification mail me at janarthanan.ram@gmail.com

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ABHIRUCHI SHARMA 8 years ago

A sum of money placed at compound interest doubles itself in 4 years .In how many years will it amount to eight times itself?

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Rishu 8 years ago

12 years

amount=p(1+r/100)^n.....(1)
according to question:
p[(1+r/100)^4]=2p
let (1+r/100)=X
p*X^4=2p
X^4=2
cubing both sides
(X^4)^3=2^3
X^12=8
p*X^12=8p
p[(1+r/100)^12]=8p.....(2)
comparing (2) with (1),
n=12

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MOUNIKA 8 years ago

Hi can any one say what is best to prepare for techmahindra offcampus referral drive reply soon

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MOUNIKA 8 years ago

Pls send techmahindra previous year written test papers and essay questions to kavadapumounika@gmail.com

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varun 8 years ago

How many 3/8 are there in 14 7/8?

Reply Like? Yes (4) | No

Rishu 8 years ago

let x 3/8 are there in 14 7/8
14 7/8=119/8
(3/8)*x=119/8
x=39 2/3

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ABHIRUCHI SHARMA 8 years ago

The simple interest on a sum of money is 1/9 of the principal ,and the number of years is equal to the rate percent per annum.find the rate percent.

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sid 8 years ago

let principal=p
then according to d ques S.I=p/9
and
t=r

then
s.i=p*t*r/100

p/9=p*r*r/100(as t=r)
1/9=r^2/100
taking sqr root
1/3=r/10
then r=10/3=3.33

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aniket Sinha 8 years ago

What is the last two digit of 123^123 and how

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aniket Sinha 8 years ago

What is the last two digit. Of 123^ 123!

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Yashi Das 8 years ago

X=(123)^(123!)

The last digit of X is D.
D = X mod 10 = (123 mod 10)^(123!) mod 10 = 3^(123!) mod 10

Take the powers of 3:
3^0 = 1 mod 10
3^1 = 3 mod 10
3^2 = 9 mod 10
3^3 = 27 = 7 mod 10
3^4 = 81 = 1 mod 10
After this, the numbers will repeat.

So 3^(4*n) = 1 mod 10 for all positive integers n.
And 123! is 4*n

So D = 3^(4n) mod 10 = 1

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ROHIT JAIN 8 years ago

92,618,7672,47938,.........next number ??

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Bhargavi 8 years ago

what is the solution to this problem
a b c are non zero real numbers such that ab/(a+b = 3 bc/(b+c)=4 and ca/(c+a)=5 if abc/(ab+bc+ca)=m/n where m and n are relatively prime positive integers find m+n

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abhijeet bunkar to puppy 8 years ago

bunkar.abhi@gmail.com
plz send me tech mahindra sample paper

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manoj kumar 8 years ago

N.saimanoj1994@gmail.com

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tejaswani k 8 years ago

The sum of the ages of Abigali, Jennifer and Margarent was 52, three years ago. Four years ago, Jennifer, who is a younger than Margaret, was 11/2 times as old as Abigail. The sum of the ages of Jennifer and Margaret two years hence will be?

Reply Like? Yes (1) | No (1)

tejaswani k 8 years ago

The ratio of the ages of Aunt Agatha and Uncle Roger is 5:6, the same a the ratio of the ages of their children, Suzanne and Bernard. If the sum of the ages of Suzanne and Aunt Agatha, five years ago was 60, what will be the sum of the ages of Bernard and Uncle Roger five years hence?

Reply Like? Yes (2) | No

Devendra Marghade 8 years ago

94 years

If present ages of Aunt Agatha=A, Uncle Roger=R, Suzanne=S, Bernard=B, then
A/R=5/6 ---(i) & S/B=5/6 ---(ii)
Given (A-5) + (S-5)=60, S+A=70 ---(iii)
From (i) 6A=5R & from (iii) A=70-S, so 6(70-S)=5R , 420- 6S=5R ---(iv)
From (ii) 6S=5B, substituting in (iv), 420- 5B= 5R or B+R=84 ---(v)
So ages of Bernard and Uncle Roger after 5 years= (B+5) +(R+5)=B+R+10 =84+10 =94

Like? Yes (1) | No

tejaswani k 8 years ago

How many kg of rice priced at $ 3.6 should be added to 24 kg of rice priced at $ 2.7 per kg in order to make 5% profit on selling the maximum at $ 3.15 per kg?

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Prashant 8 years ago

a car travel 50% faster then bike both starts at the same time a to b . the car reach 25 minutes earlier then bike . if the distance between a to b is 100 km find speed.
A.120 B 100 c 80 d 75

Reply Like? Yes (2) | No

Devendra Marghade 8 years ago

Speed(in kmph) of bike=80 , car=120

If speed of bike=x, then speed of a car=1.5x
According to given condition: (100/b) - (100/1.5b) =25/60
On solving, b=80, so speed of a car=1.5*80=120

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Gayatri Nillawar 8 years ago

plzzzz send latest cocubes placement papers for capgemini at nillawargg@gmail.com

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Gayatri Nillawar 8 years ago

plzzzz send latest cocubes placement papers for capgemini at nillawargg@gmail.com

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Karthika 8 years ago

TCS feb 2016 result got published. Finally i got selected feeling happy and great. All credits goes to M4maths. and thank u all for ur apps support. And also i received call letter very soooon thank godddd

Reply Like? Yes (7) | No

ashok felix 8 years ago

yes ...! i also got placed in TCS . which stream in u are..?

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Karthika 8 years ago

Reply Like? Yes (3) | No

Smita kumari 8 years ago

Karthika can u plz tell me how u have prepare for tcs.

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annapurna bhosale 8 years ago

A circular road runs around a circular garden. If the sum of the circumferences of the inner and outer circles is 88 metres and the radius of the inner circle is one-third of the outer circle, then the width of the road is :

A. 4 metres
B. 5 metres
C. 6 metres
D. 7 metres

Reply Like? Yes (1) | No

Devendra Marghade 8 years ago

D. 7 meters

If the radius of smaller circle=r then radius of bigger circle=3r
Given Sum of the circumferences=2*Pi*r + 2*Pi*3r=88, r=88/(8*Pi)=7/2, So 3r=21/2
Width of the road=Outer radius - Inner radius= (21/2) - (7/2)=7

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Arijit 8 years ago

Permutation & Combination : How many ways can you order the letters from the word TREES if:
It begins with exactly one E?

Reply Like? Yes (1) | No

tejaswani k 8 years ago

Ashok brought a gift article and spent Rs. 110 on its repair. He then sold it to Bhushan at a profit of 20%. Bhushan sold it to Charan at a loss of 10%, and Charan sold the same for Rs. 188 at a profit of 10%. How much did Ashok pay for the article?

Reply Like? Yes (1) | No

tejaswani k 8 years ago

What is the length of a cylindrical wire of radius 3 mm that can be drawn from a copper sphere of radius 21 cm?

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tejaswani k 8 years ago

A girl wants to buy a bag. She decided to save her pocket money to buy it. On the first day, she saves Rs. 10, and on every subsequent day, she saves Rs. 10 more than the money she has saved on the previous day. On which day would the girl be able to save Rs. 1200 for her bag?

Reply Like? Yes (1) | No

Devendra Marghade 8 years ago

15 th day

Saving of a girl will be 10,20,30,40, ......... to sum up 1200 Rs.
As this forms an arithmetic series with first term a=10, difference d=10
Sum of an arithmetic series=(n/2)[2*a+(n-1)d]=1200 or (n/2)[2*10 + (n-1)*10]=1200
On simplifying , n^2+n-240=0 , (n-15)(n+16)=0, so n=15

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surya to Aradhana kumari 8 years ago

hi,aradhana how r u..

Reply Like? Yes (2) | No

BHUVANESHWARI to puppy 8 years ago

can u plz send me the Tech Mahindra placement papers---- bhuvanatomail@gmail.com

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