TCS Company Numerical Ability Permutation and Combination

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1. There are three communities A,B & C. 2 members belong to all communities. 3 members belong to A & B. 3 members belong to B & C. 3 members belong to C & A. What is the minimum possible number of members in any of the 3 communities?The answer is 5. Draw Venn diagrams for this problem and you’ll easily get the answer.

2. There are 5 men and 11 women. How many ways can a panel of 16 be formed such that the number of men is not more than 3?The answer is 2256.(Use combinations – 11c11+5c1*11c10+5c2*11c9+5c3*11c8)

3. FGHIJKLMN are 8 people. They need to be divided into2 groups. They’ll give you some 5 conditions and they’ll ask you how can one of those groups be paired? You have to make sure all the conditions satisfy both the groups and select an answer.

4. I don’t remember them. This is a time and work problem. X does a job alone in 5 days, y does a job alone in 8 days. When x, y and z work together they complete the job in 3 days. How many days does z take to complete the job alone.

5. If sum of the values along the topmost row, bottom most row, left most column, and right most column is all equal to k, find the value of k. They’ll give you the values of a,b,c,d,e and f. They’ll give you a 4×4 table.You have to substitute the values of a,b,c,d,e and f in such a way that the sum equals to k and you find k. Sudoku logic.

6. What is the largest four digit numb that is added to (some number around 7500) which will be exactly divisible by 9,12,13,54?There where 4options like 9000,9565,6050,8000(None of them were divisible by 54 when the options were added up with that number)So thought it was dummy

7. There was two problem on rolling of 3dice and what is the probability if the sum of outcome is 13,10

8. Some scenario was given saying that In a street in Tokyo the house are build according to the following condition. 1st house is always older than second house soo second house should be larger than 1st house..No two houses of same sizein that street..soo find which is the new house will some Data sufiency

9. A tree is cut and falls on the road the width of the road will be given
..so What will be the length of the tree if it fall exactly on the road..something like that.Height of the tree-width of the road was the answer

10. If the given sheet is folded to form a cube, which side will be opposite to X? The answer is C. Just look at it 3 dimensionally. So, when you fold it A goes to the right of X. B goes on top and C will be opposite to X.

11. What will be the time when A and B walks parallely if A is old and so walks slow and B is young and walks faster A starts at 10.00 am,B starts at 10.15am and some conditions for reaching office if A starts 1st What tym will B walk parallel to him options where 10.20,10.30,11.00,11.05..data was not sufficient

12. A starts riding his bike at 10 am, speed 20 kmph, B starts at 10 am, speed 40 kmph. A turns south at 12 o clock and B turns north at 11 am. They both meet at 2 pm. What’s the distance between A and B?The answer is 160 km.(Couldn’t figure out)

13. Permutation problem on finding the 25th word if the word RANKED is arranged in dictionary order

Read Solution (Total 13)

TCS Other Question
Girish tore away one of the pages from Vaidhy’s book. Later Girish figured that the average of the remaining pages of the book is 67 10/19. Find the page numbers that Girish had torn away assuming that the pages are starting from 1.
A. 87 & 88 B. 99 & 100
C. 89 & 90 D. 100 & 101

In a CHESS board 2 squares are deleted. In how many ways we can select 1 white square & 1 black square such that they will never occur in same row & same column?

The remainder when 50! is divided by 1615 ?

In 8*8 chess board what is the total number of squares ?