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When I become as old as my father is now, I will be 5 times the age of my son. In addition, my son will be 8 yrs older than What I am now. If the sum of my father's age and my age is equal to100. How old is my son now?


A13 years

B15 years

C12 years

D20 years

Answer: Option A

Explanation:

Let us consider the ages of the man, his father & his son is m, f & s respectively.
Then according to the problem F = 5s ------------ (i)
S + f-m = m+8 ------------- (ii)
F + m = 100 -------------(iii)
Putting (i) in (iii) we get
5s + m = 100 ---------(iv)
By, Putting (i) in (ii)
6s-2m = 8 ------- (v)
By Eq. (iv) & (v)
s = 13, f = 65 & m = 36
So, Son age = 13 years.

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1(1!)+2(2!)+3(3!)....2012(2012!) = ?


A2013!-1

B2011!-1

C2012!-1

DNone of these

Answer: Option A

Explanation:

1(1!)=1 => 2!-1
1(1!)+2(2!)=1+4=5 => 3!-1
1(1!)+2(2!)+3(3!)=1+4+18=23 => 4!-1
........................
.......................
1(1!)+2(2!)+3(3!)+........+2012(2012!)=2013!-1

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If X^Y denotes X raised to the power of Y, find out last two digits of (2957^3661)+(3081^3643)


A42

B38

C98

D22

Answer: Option C

Explanation:

(2957^4)^3660 *2957 +(3081)^3643
last 2 digits of (57)^4 is 01
so (01)^3660 yields last two digits as 01
{since the unit's digit is always 1 and tens digit is obtained by 0*0=0}
so 2957*01 gives last 2 digits 57
similarly (81)^3643 gives ten's digit as the unit digit of 8*3 ie 4
so 57 +41=98

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if f(x) is a function for all real numbers x holds good for maximum of 2x+4 and 12+3x. Then what is the value of x so that f(x) is equal to 2x+4.


A9

B-9

C-7

D0

Answer: Option B

Explanation:

maximum (2x+4 ,12+3x)
and ques says maximum is 2x+4
if x= -9 2x+4 = -14 and 12+3x= -15 maximum is -14
Value of x = -9

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


A6:00 am

B6:40 AM

C7:40 am

D7:00 am

Answer: Option B

Explanation:

Latitudianal difference=(10+70)=80
So, time difference=80X4=320mins=5 hrs 20 mins
Since the place is located towards west
Therefore local time of that place during take off=8:40 p.m.
So, local time during landing=8:40p.m.+10hrs=6:40a.m

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In a class there are 60% of girls of which 25% poor. What is the probability that a poor girl is selected is leader?


A15%

B50%

C80%

D30%

Answer: Option A

Explanation:

girls=60%
poor gilrs=25%60 ie 15%
so probability that a girl will be poor is 15%

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(sin nx/n)=?


A90

B0

C1

D2

 View Answer |  Submit Your Solution | Topic: Uncategorized| Asked In TCS |

Answer: Option B

Explanation:

Here n is a natural no. let us put n=1 u vl get x=sinx wich means x is very small or tending to 0
so, answer is 0

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A petri dish hosts a healthy colony of bacteria.once a minute every bacterium divides into two.the colony was founded by a single cell at noon.at exactly 12.43(43 minutes later) the petri dish was half full. At what time the dish will be full?


A12.44

B12.54

C12.45

DNone of these

Answer: Option A

Explanation:

Given that the bacteria doubles for every one minute,
After 43 minutes it was half full,
It will become full in the next minute i.e. at 12:44 or after 44 minutes

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If ab3133ab is divisible by 12.What is the minimum value of (a+b)?


A4

B6

C7

D2

Answer: Option C

Explanation:

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Two people A and B starts running at 10:00 AM towards north at a speed of 40Kmph and 60Kmph respectively. After 2 hours(12:00 noon ), A turned left and B turned right. They stopped at 2:00 PM.Find the distance between A and B at 2:00 PM.


A120

B190

C230

D200

Answer: Option D

Explanation:

Here is no explanation for this answer

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