Cognizant Cognizant Problem Solving and Logical Reasoning 2

Question 1

In a row of 40 students, Priya is 15th from the left. What is her position from the right?

Accepted Answer

26th

Answer

Position from right = (40 − 15 + 1) = 26th.

Question 2

Pointing to a photograph, Ram says 'She is the daughter of my grandfather's only son.' How is the person related to Ram?

Accepted Answer

Sister

Answer

Ram's grandfather's only son is Ram's father, and that person's daughter is Ram's sister.

Question 3

What is 15% of 20% of 500?

Accepted Answer

15

Answer

20% of 500 = 100; 15% of 100 = 15.

Question 4

If 6 men can complete a work in 10 days, how many men are needed to complete it in 4 days?

Accepted Answer

15

Answer

Men × Days = constant: 6 × 10 = 60; men needed = 60 / 4 = 15.

Question 5

Choose the odd one out: 17, 19, 23, 27, 29

Accepted Answer

27

Answer

27 = 3³ is not a prime number, while 17, 19, 23, and 29 are all primes.

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