Maths Week Day 3

Maths Week Day 3 -Wednesday:
Question 1:
Find the odd man out in the following list: 3,5,11,14,17,21

Question 2:
What decimal of an hour is a second?
A. .0025
B. .0256
C. .00027
D. .000126

Answers to yesterday’s questions:

Question 1:
Answer: Option A
Explanation:
Let the son’s present age be x years.
Then, (38 – x) = x
2x = 38.
x = 19.
Son’s age 5 years back (19 – 5) = 14 years.

Question 2:
Answer: Option D
Explanation:
91 is divisible by 7. So, it is not a prime number.

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