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Maths Quotes

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Sandeep Upadhyay

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Charles R. Darwin

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Vipul Chavan 4 years ago

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yash mittal 5 years ago

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(10 years ago) "Other"

what will be the cut off for 36 marks in TCS aptitude?

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(10 years ago)

it wil be in between 20 and 22

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to (10 years ago) "Other"

can u explain pls!!!

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(10 years ago) "Other"

narayan walks at a speed of 20kmph reaches his colleges 10 mins late.ext time he increases his speed by 5km/h but finds that he is still late by 4 mins.what is the distance of his college from his house

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(10 years ago)

Direct farmula d=[(10-4)/60](20*25)/(25-20)=10 km

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(10 years ago)

other way - let time taken =t

d=20(t+10/60)=25(t+4/60)

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to (10 years ago) "Other"

X^Y means,X raised to the power Y.how many integers X satisfy the equation (X^2-X-1)^X+2=1?
how to solve
....

Reply Like? Yes (3) | No

(10 years ago)

4 values...x=-2,-1,2,0
it will be 1 only when x+2=0/even and x^2-x-1=1/-1
solve and u will get all values of x

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(10 years ago) "Other"

My flight takes of at 2am from a place at 18N 10E and landed 10 Hrs later at a place with
coordinates 36N70W. What is the local time when my plane landed?

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(10 years ago)

according to me 6:40 am
but i m not sure..

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(10 years ago)

the ans. is correct but how did u get dat shivendra....plz explain

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(10 years ago)

6.40 am ans
longitudinal difference=70W-10E=80
means destination is 80 degree West from start point
time difference=4min*longitudinal diff =4*80=320 min
for linear distance it reach at 2am+10 hr=12pm
but here 12pm - 320 min = 6.40 am

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(10 years ago) "Other"

hey guys please send me latest 2014 tcs question papers at manurag02@gmail.com also give some tips to clear the apti m not so well prepared.

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(10 years ago) "Other"

A circular dartboard of radius 1 foot is at a distance of 20 feet from you. You throw a dart
at it and it hits the dartboard at some point Q in the circle. What is the probability that Q is
closer to the center of the circle than the periphery?

Reply Like? Yes | No

(10 years ago)

(pi*1^2)/ (pi*0.5^2) =0.25

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(10 years ago) "Other"

There are two boxes, one containing 10 red balls and the other containing 10 green balls.
You are allowed to move the balls between the boxes so that when you choose a box at
random and a ball at random from the chosen box, the probability of getting a red ball is
maximized. This maximum probability is

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(10 years ago)

maximum probability is 14/19

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(10 years ago)

plz .....explain

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(10 years ago) "Other"

In a 100m race , A beats B by 15m and B beats C by 10m . If A beats C by 5 sec then find
the speed of C.

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(10 years ago)

what is the ans... 3.8??

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(10 years ago)

A beats B by 15m & B beats C by 10m.... It means A beats C by 25m
So distance is 25m and time is 5 sec for C as C is chasing A by 25m in 5sec
therefore speed of C= distance/ time -> 25m/5sec = 5m/sec
hence, speed of C= 5m/sec

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(10 years ago)

ans=4.7 m/s
When B is at finish line(100m) difference B-C=10m
So when B is at (100-15)m difference B-C=10*85/100=8.5m
means A-C=(A-B)+(B-C)=15+8.5=23.5m
so C cover 23.5m in 5 sec means speed=23.5/5=4.7 m/sec

Like? Yes (3) | No

(10 years ago)

ans is 4.7m/sec........radha

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(10 years ago)

the ans will be 4.7m/sec

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to (10 years ago) "Other"

challenge me..................................................................

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to (10 years ago) "Other"

my flight takes off at 2 am from a place at 18N 10E and landed at 10 hours later at coordinates 36N 70W. what is the local time when my plane landed? try this

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(10 years ago)

Like? Yes (1) | No

to (10 years ago) "Other"

my flight takes off at 2 am from a place at 18N 10E and landed at 10 hours later at coordinates 36N 70W. what is the local time when my plane landed?

Reply Like? Yes | No

(10 years ago) "Other"

hair,pair,lair,fair....find odd one out

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(10 years ago)

I think it should be pair..

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(10 years ago)

fair.
h+4=l
l+4=p

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(10 years ago)

lair...................................

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(10 years ago)

lair belongs to den were as hair,pair,fair related to beauty

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(10 years ago) "Other"

in a family there are some boys and girls.aal boys are told that they are having equal no of brothers and sisters and girls told that they are having twice the no of brothers than sisters.how many boys andgirls present in family

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(10 years ago)

4 boys and. 3 girls

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to (10 years ago) "Other"

hey dear,please send amcat question papers to my emil id deependra081991@gmail.com

Reply Like? Yes | No (1)

(10 years ago) "Other"

two trains travelling in opposite directions with uniform speed 60 and 50 km per hour . cross each other in 5 seconds . the person sitting in the fast moving train crosses the train in 18 seconds . Find the length of the trains ?

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(10 years ago)

Let L1 & L2 are length of trains.
(60+50)*5/18=(L1+L2)/5 ------eq1
(60+50)*5/18=(L2+0)/18 ------eq2

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to (10 years ago) "Other"

varsha pls post some more questions in ur yesterdays tcs paper

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(10 years ago) "Other"

what is the remainder when the number 1234567891011121314151617181920212223242526272829303132333435363738394041424344 is divided by 45

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(10 years ago) "Other"

If f(x)=ax+b, then f(f(f(x)))=8x+21.Then a+b is?

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(10 years ago)

f(f(ax+b)
=f(a(ax+b)+b)
=f(a^2x+ab+b)
=a(a^2x+ab+b)+b
=a^3x+a^2b+ab+b
a^3x+b(a^2+a+1)
given that is equal to 8x+21
by comparing we ger a^3=8 which implies a is 2
and by substiting we get b=3
so a+b=5

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to (10 years ago) "Other"

thanks bro for solving: In how many ways 7 different objects can be divided among 3 persons so that either one or two of them do not get any object.

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to (10 years ago) "Other"

hello, can you jus tell me which book you refer to prepare quant...???
I'm very poor in quanti

Reply Like? Yes | No (1)

(10 years ago) "Other"

A bag contains 6 red chips,4 blue chips,and 7 white chips.What is the probability of drawing a red chip at least 3 out of 5 times,replacing each chip every after every selection?????

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to (10 years ago) "Other"

Find the remainder when 41 raised to power 77 is divided by 7?

Reply Like? Yes | No (1)

(10 years ago)

6
Power of 41 when divided by Pattern is
6 1 6 1 .........
As 77 is odd
So answer is 6

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(10 years ago)

41^77 / 7
=(7*6-1)^77 / 7
= (-1)^77 / 7
= -1/7
rem = 7-1 = 6

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(10 years ago) "Other"

What is unit digit of 1!+2!+....50!=?

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(10 years ago)

1+1!=1,2!=2,3!=6,4!=24,5!=120,6!=720, therefore all the term from 5! t0 50! has zero at its unit place.so,unit place digit will be=(1+2+6+24)=33, unit place=3

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to (10 years ago) "Other"

Dear Agawal,
The answer u submitted was good but u should write Dear Gill instead of Respected Sir why becoz he mentioned ur boss Gill in that question so u have to mention Gill as Dear Gill.
Ur Regards,
Shafi
shafirguiiit@gmail.com

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(10 years ago) "Other"

Three distinct single-digit numbers A,B and C are in Geometric Progression.
If abs(x) for real x is the absolute value of x(x if x is positive or zero and -x if x is negative),
then the numbers of different possible values of abs(A+B-C) is:
a)3 b)4 c)6 d)5

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(10 years ago)

1,2,5,10,11

so total 5 different Values

Like? Yes | No (1)

(10 years ago) "Other"

Find the remainder when 41 raised to power 77 is divided by 7?

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(10 years ago)

6 ans.
(7*6-1)^77 so (-1)^77=-1
-1/7 remainder =-1 or 6

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to (10 years ago) "Other"

pls send me sap labs sample papers as soon as possible..my email id is
madhusudan_@live.com

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(9 years ago)

hello ramya i going to attend off campus for sap labs company so please send me sample papers thanks in advance my mail id saipreetham.t66@gmail.com

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(10 years ago) "Other"

An equation is of the form 7x+17y+3z=54. Find the distance between x intercept and z intercept?
a) 72/7
b) 37/3
c) 122/8
d) 123/7

Reply Like? Yes | No

(10 years ago)

X-intercept means y,z coordinates are zero.
so X-intercept is (54/7,0,0)
Z-intercept means x,y coordinates are zero.
So z-intercept is (0,0,54/3)
The diStance between two points is (18/7)*(58)^1/2.But there is no answer.If I am wrong Please let me know.

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to (10 years ago) "Other"

Rahul bhai thanks a lot for sharing your thoughts on a problem of Crypt on this site ! Keep in touch.

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(10 years ago) "Other"

how many triangles are formed from n straight line

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(10 years ago)

answer will be : nC3

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(10 years ago)

it's wrong.if we take 4 straight line then we get 3 triangles.but according to this we get 4 triangles

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(10 years ago) "Other"

In a mixture of a, b, & c, if a and b are mixed in 3:5 ratio and b and c are mixed in 8:5
Ratio and if the final mixture is 35 liters, find the amount of b?

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(10 years ago)

a:b = 3:5 = 24:40 (intentionally multiplied with 8)
b:c = 8:5 = 40:25 (intentionally multiplied with 5)

so a:b:c = 24:40:25

b has 40 parts out of 89 (i.e. 35 liters)

so b in liters = 35 * 40 / 89
= 15.73 liters

Like? Yes (1) | No

(10 years ago)

a:b:c=3*8 : 5*8 : 5*5 = 24:40:25
total 24+40+25=89 part =35 litres
so 40 part = 40*(35/89) =15.73 litres

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(10 years ago) "Other"

pls give mme solution
two vehicles A and B leave from city Y to city X. A overtakes B at 10:30am and reaches city X at 12:00 pm. It waits for 2 hours and returns to the city Y. On its way it meets B at 3:00 pm and reaches city X at 5:00 pm. B reaches city X, waits for 1 hour and returns to the city Y. After how many hours will B reach city Y from the time A overtook him for the first time ?

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

to (10 years ago) "Other"

Bro please send me tcs question ,I think in ur campus tcs conducted the paper??gagandeepsingh516@ymail.com

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(10 years ago) "Other"

please someone send me tcs latest question ,TCS is coming in our campus tomorrow!!My email is gagandeepsingh516@ymail.com

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(10 years ago)

Plzzzz send me too..kansalpankhuri@gmail.com

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to (10 years ago) "Other"

Thank you Naveen for solving the problem: A father purchases dress for his three daughter.The dresses are of same color,but of different size.The dress is kept in dark room.What is the probability that all the three will not choose their own dress..

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(10 years ago)

Answer of this problem is 1/3

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to (10 years ago) "Other"

Thank you Pranoy for solving the problem: A father purchases dress for his three daughter.The dresses are of same color,but of different size.The dress is kept in dark room.What is the probability that all the three will not choose their own dress..

Reply Like? Yes (1) | No

(10 years ago) "Other"

Two circles of radii 5 cm and 3 cm touch each other at A and also touch a line at B and C. The distance BC in cms is?
a) 60
b) 62
c) 68
d) 64

Reply Like? Yes (1) | No (2)

(10 years ago)

ans: option "d"
(5+3)^2=8^2=64

Like? Yes (2) | No (1)

(10 years ago) "Other"

. If f(x) = 7 x +12, what is f-1(x) (the inverse function)?
a) (x-12)/7
b) 7x+12
c) 1/(7x+12)
d) No inverse exists

Reply Like? Yes (3) | No (1)

(10 years ago)

let f(X)=y then x=f^-1(y)
y=7x+12------->x=(y-12)/7
f^-1(y)=(y-12)/7
then put x in place of y,
f^-1(x)=(x-12)/7. ans is optionA

Like? Yes (1) | No (1)

(10 years ago) "Other"

. Eric throws two dice, and his score is the sum of the values shown. Sandra throws one die, and her score is the square of the value shown. What is the probability that Sandra’s score will be strictly higher than Eric’s score?

a) 137/216
b) 17/36
c) 173/216
d) 5/6

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

(10 years ago) "Other"

A call center agent has a list of 305 phone numbers of people in alphabetic order of names (but she does not have any of the names). She needs to quickly contact Deepak Sharma to convey a message to him. If each call takes 2 minutes to complete, and every call is answered, what is the minimum amount of time in which she can guarantee to deliver the message to Mr. Sharma.
a) 18 minutes
b) 610 minutes
c) 206 minutes
d) 34 minutes

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

(10 years ago) "Other"

There is a change in the aptitude test pattern for infosys. Have any of you appeared for the placement drive(batch of 2015) yet? Kindly reply

Reply Like? Yes (1) | No

(10 years ago) "Other"

A man goes upstream for a distance of 10 km in 5 hrs. Another man goes downstream the same distance of 10kms in
3 hrs. What is the difference in speeds of the two men if the river speed is 0.5 kmph

Reply Like? Yes | No

(10 years ago)

10/5=x-1/2
10/3=y+1/2
So y-x+1=4/3
y-x=1/3 kmph

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(10 years ago) "Other"

49. If N is an integer and N>2, at most how many integers among N+2, N+3, N+4, N+5, N+6 and N+7 are prime integers?
a) 2
b) 1
c) 3
d) 4
please anybody solve this

Reply Like? Yes (6) | No

(10 years ago)

c) 3
when N> 2 then N+2 N+3 N+4 N+5 N+6 N+7 there will be exactly 3 odd and 3 even so at most 3 prime integers

Like? Yes (1) | No (1)

to (10 years ago) "Other"

Please could u send tcs qns with answers to (OF OPENSSEESAME AND NEW PATTERN) to gkrtik93@gmail.com

Reply Like? Yes (1) | No

to (10 years ago) "Other"

pls help me solve this question

Three distinct single-digit numbers A,B and C are in Geometric Progression. If abs(x) for real x is the absolute value of x (x if x is positive or zero, and -x if x is negative), then the number of different possible values of abs(A+B-C) is

options:
a) 6
b) 4
c) 5
d) 3

Reply Like? Yes | No

(10 years ago) "Other"

A Programmer noted the results of attempting to run 20 programs. The results that 2 programs run correctly in the first attempt, 7 programs run correctly in the second attempt, 5 programs run correctly in the third attempt, 4 programs run correctly in the fourth attempt and 2 programs run correctly in the fifth attempt. What is the probability that this next program will run correctly on the third run ?anybody knw this q ans?

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(10 years ago)

Answer of above question is 1/4

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to (10 years ago) "Other"

hello rakesh
u have written that coal cost is 12*100/s yy?

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(10 years ago) "Other"

finding square for 101^2
sol:
101^2=(101+1)(1^2)=10201
101^2=(102+2)(2^2)=10404

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(10 years ago) "Other"

can any 1 send me efftronics solved papers to susmi3191@gmail.com pls guys

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