TCS Aptitude Practice 3
TCS Aptitude Test 3
This is the Third Test in the series "Practice TCS Aptitude Test".
Please remember that you have to make exam environment by yourself.
You can take the test as many times as you wish.
You may expect lots of questions from this Test with different data in your real Aptitude Test. :)
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Question 1 
After the typist writes 12 letters and addresses 12 envelopes, she inserts the letters randomly into the envelopes (1 letter per envelope). What is the probability that exactly 1 letter is inserted in an improper envelope?
A  0

B  12/212 
C  11/12 
D  1/12 
Question 2 
A man, a woman, and a child can do a piece of work in 6 days. Man only can do it in 24 days. Woman can do it in 16 days and in how many days child can do the same work?
A  12 
B  40 
C  6 
D  8 
Question 3 
Amrith told to Anand in front of a photo that “He is the son of my father's son”. Find who is in the picture if Amrith have no brothers and sisters.
A  Amrith himself 
B  Amrith's Uncle 
C  Amrith's Father 
D  Amrith's Son 
Question 4 
A sheet of paper has statements numbered from 1 to 40. For all values of n from 1 to 40, statement n says: ‘Exactly n of the statements on this sheet are false.’ Which statements are true and which are false?
A  The even numbered statements are true and the odd numbered statements are false. 
B  The odd numbered statements are true and the even numbered statements are false. 
C  All the statements are false. 
D  The 39th statement is true and the rest are false. 
Question 5 
There are two water tanks A and B, A is much smaller than B. While water fills at the rate of one liter every hour in A, it gets filled up like 10, 20, 40, 80, 160 in tank B. (At the end of first hour, B has 10 liters, second hour it has 20, third hour it has 40 and so on). If tank B is 1/32 filled after 21 hours, what is the total duration required to fill it completely?
A  26hrs 
B  25hrs 
C  5hrs 
D  27hrs 
Question 6 
A hare and a tortoise have a race along a circle of 100 yards diameter. The tortoise goes in one direction and the hare in the other. The hare starts after the tortoise has covered 1/5 of its distance and that too leisurely. The hare and tortoise meet when the hare has covered only 1/8 of the distance. By what factor should the hare increase its speed so as to tie the race?
A  37.80

B  8 
C  40 
D  5 
Question 7 
From the top of a 9 metres high building AB, the angle of elevation of the top of a tower CD is 30º and the angle of depression of the foot of the tower is 60º. What is the height of the tower?
A  12 
B  18 
C  9 
D  15 
Question 8 
For the FIFA world cup, Paul the octopus has been predicting the winner of each match with amazing success. It is rumored that in a match between 2 teams A and B, Paul picks A with the same probability as A’s chances of winning. Let’s assume such rumors to be true and that in a match between Ghana and Bolivia; Ghana the stronger team has a probability of 2/3 of winning the game. What is the probability that Paul will correctly pick the winner of the GhanaBolivia game?
A  1/9 
B  4/9 
C  5/9 
D  2/3 
Question 9 
How many 9 digit numbers are possible by using the digits 1, 2, 3, 4, 5 which are divisible by 4 if the repetition is allowed?
A  5^7

B  5^6 
C  5^9 
D  5^8 
Question 10 
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?
A  12 noon 
B  6: 40 AM 
C  5: 20 PM 
D  6:50 AM 
Question 11 
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.
A  5 m/sec 
B  Speed of C cannot be found with given data 
C  4.7 m/sec 
D  4 m/sec 
E  4.5 m/sec 
Question 12 
If there are 30 cans out of them one is poisoned if a person tastes very little he will die within 14 hours so if there are mice to test and 24 hours to test, what is the minimum no. of mice’s required to find poisoned can?
A  3 
B  2 
C  5 
D  1 
Question 13 
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
A  1/2

B  14/19 
C  37/38 
D  3/4 
Question 14 
36 people {a1, a2… a36} meet and shake hands in a circular fashion. In other words, there are totally 36 handshakes involving the pairs, {a1, a2}, {a2, a3}, …, {a35, a36}, {a36, a1}. Then size of the smallest set of people such that the rest have shaken hands with at least one person in the set is
A  12 
B  11 
C  13 
D  18 
Question 15 
The difference between two no is 9 and the product of the two is 14. What is the square of their sum?
A  120 
B  130 
C  137 
D  145 
Question 16 
49 members attended the party. In that 22 are males, 27 are females. The shake hands are done between males, females, male and female. Total 12 people given shake hands. How many such kinds of such shake hands are possible?
A  122 
B  66 
C  48 
D  128 
Question 17 
Ferrari S.P.A is an Italian sports car manufacturer based in Maranello, Italy. Founded by Enzo Ferrari in 1928 as Scuderia Ferrari, the company sponsored drivers and manufactured race cars before moving into production of streetlegal vehicles in 1947 as Ferrari S.P.A. Throughout its history, the company has been noted for its continued participation in racing, especially in Formula One where it has employed great success. Rohit once bought a Ferrari. It could go 4 times as fast as Mohan’s old Mercedes. If the speed of Mohan’s Mercedes is 35 km/hr and the distance traveled by the Ferrari is 490 km, find the total time taken for Rohit to drive that distance.
A  20.72 
B  3.5 
C  238.25 
D  6.18 
Question 18 
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?
A  0.75 
B  1 
C  0.5 
D  0.25 
Question 19 
A grand father has 3 grand children. Age difference of two children among them is 3. Eldest child age is 3 times the youngest child’s age and the eldest child age is two year more than the sum of age of other two children. What is the age of the eldest child?
A  15 
B  10 
C  22 
D  18 
Question 20 
Oshkosh did a study of the colors used in African national flags. He found that 38 flags have red, 20 have blue, 13 have both red and blue, and 8 have neither red nor blue. How many flags
A. have red but not blue?
B. have blue but not red?
C. were included in the study?
A  25, 7, 53 
B  38, 20, 79 
C  25, 7, 66 
D  30, 20, 60 
Question 21 
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?
A  13.34 
B  15.73 
C  16.73 
D  9.45 
Question 22 
10 suspects are rounded by the police and questioned about a bank robbery. Only one of them is guilty. The suspects are made to stand in a line and each person declares that the person next to him on his right is guilty. The rightmost person is not questioned. Which of the following possibilities are true?
A. All suspects are lying.
B. leftmost suspect is innocent.
C. leftmost suspect is guilty
A  A only 
B  A or C 
C  A or B 
D  B only 
Question 23 
3 friends A, B, C went for week end party to McDonald’s restaurant and there they measure there weights in some order IN 7 rounds. A, B, C, AB, BC, AC, ABC. Final round measure is 155kg then find the average weight of all the 7 rounds?
A  88.5 
B  77.5 
C  50 
D  55 
Question 24 
Adam sat with his friends in the Chinnaswamy stadium at Madurai to watch the 100 metres running race organized by the Asian athletics Association. Five rounds were run. After every round half the teams were eliminated. Finally, one team wins the game. How many teams participated in the race?
A  30

B  32 
C  41 
D  54 
Question 25 
A hollow cube of size 5 cm is taken, with a thickness of 1 cm. It is made of smaller cubes of size 1 cm. If 1face of the outer surface of the cube are painted, totally how many faces of the smaller cubes remain unpainted?
A  900 
B  488 
C  563 
D  800 
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