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TCS Placement Papers with Solution Page 902

(#M40000656) TCS QUESTION Keep an EYE

A cistern is two-third full of water. Pipe A can fill the remaining part in 12 minutes and pipe B in 8 minutes. Once the cistern is emptied, how much time will they take to fill it together completely?
(A) 12 minutes (B) 12.5 min (C) 14.4 min (D) 10.2 min (E) 14.66 min

Asked In TCS anuj (14 years ago)

Solved Asheesh Jain Read Solution (10)

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(#M40000655) TCS QUESTION Keep an EYE

1. Three terrorists are employed to shoot a renowned person Mr. X. Only one bullet is sufficient to kill him if it strikes in the head. The probabilities of the terrorists striking Mr. X’s head by their bullets are 0.2, 0.3, and 0.4. What is the probability that Mr. X is shot dead?
(A) 0.336 (B) 0.9 (C) 0.1 (D) 0.760 (E) 0.664

Asked In TCS anuj (14 years ago)

Solved Rahul Kumar Saini Read Solution (6)

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(#M40000654) TCS QUESTION Keep an EYE

1. A square is drawn inside a right-angled triangle with the two perpendicular sides as 12 cm and 8 cm. what is the side of the largest possible square that can be drawn?
(A) 4 cm (B) 4.8 cm (C) 4.5 cm (D) 4.4 cm (E) 5 cm

Asked In TCS anuj (14 years ago)

Solved Jai Read Solution (4)

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(#M40000653) TCS QUESTION Keep an EYE

A car is traveling at uniform speed. The driver sees a milestone showing a two digit number which is a perfect square, after traveling for an hour the driver sees another milestone with the same digits in reverse order and after another hour the driver sees another milestone containing the same two digits as part of a three digit number. What is the speed of the car?
(A) 30 kmph
(B) 40 kmph
(C) 50 kmph
(D) 60 kmph
(E) 45 kmph

Asked In TCS anuj (14 years ago)

Solved Asheesh Jain Read Solution (8)

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(#M40000652) TCS QUESTION Keep an EYE

A tap can fill a tank in 16 minutes and another can empty it in 8 minutes. If the tank is already 1/2 full and both the taps are opened together, will the tank be filled or emptied? How long will it take before the tank is either filled completely or emptied completely as the case may be? .
(A) Emptied; 16 mins
(B) Filled; 8 mins
(C) Emptied; 12 mins
(D) Filled; 12 mins
(E) None of These

Asked In TCS anuj (14 years ago)

Solved Rahul Kumar Saini Read Solution (5)

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(#M40000651) TCS QUESTION Keep an EYE

The average age of all boys in the class is 16.66, while the average age of all girls in the same class is 18.75. Thus the average marks of all 40 students in the class is 17.5 what is the number of girls in the class?
(A) 12
(B) 16
(C) 18
(D) 20
(E) Data Insufficient

Asked In TCS anuj (14 years ago)

Unsolved Read Solution (9)

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(#M40000650) TCS QUESTION Keep an EYE

One grandfather has three grandchildren, two of their age difference is 3, eldest child age is 3 times youngest child's age and eldest child's age is two times of sum of other two children. What is the age of eldest child?

Solution

Question data are wrong.
According to ours consideration

The 2nd condition given is wrong it should be two more than the age of other two children...

Let the three grandchildren age be a,b and c
Thus, a is youngest, c is eldest.
c = 3a.........(i)
c = 2+(a+b)..........(ii)
=> 3a = 2+a+b
=> 2a = 2+b
Thus, the ages are.....
a, 2a-2 , 3a.

Two of their difference is 3.
Thus, a- 2 =3 or a+2 =3 or 2a =3
a =5 or a =1 or a =3/2.

Thus ages are, 5,8,15
or , 1,0 3 (not possible). or 3/2, 1, 9/2 (not possible.).
The answer should be 15.
This answer is given by SATYAJIT KR CHOUDHARY and is the correct answer


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Asked In TCS anuj (14 years ago)

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(#M40000649) TCS QUESTION Keep an EYE

23 people are there, they are shaking hands together, how many hand shakes possible, if they are in pair of cyclic sequence.

Asked In TCS anuj (14 years ago)

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(#M40000629) TCS QUESTION Keep an EYE

A garrison of 3300 men has provisions for 32 days when supplied at the rate of 850 g per head. At the end of 7 days, a reinforcement arrives, and it is found that the provisions can last for 17 days more when supplied at the rate of 825 g per head. What is the strength of the reinforcement?
(a) 1700
(b) 1000
(c) 3000
(d) 2700

Asked In TCS anuj (14 years ago)

Solved Rahul Kumar Saini Read Solution (3)

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(#M40000628) TCS QUESTION Keep an EYE

9. A train starts full of passengers. At the first station, it drops one-third of the passengers and takes 280 more. At the second station, it drops one-half of the new total and takes 12 more. On arriving at the third station, it is found to have 248 passengers. Find the number of passengers in the beginning.



(a) 240 (b) 248 (c) 280 (d) 288

Asked In TCS anuj (14 years ago)

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