Question

Find the odd one out 28, 65, 126, 215.
A. 28
B. 65
C. 126
D. 215

Answer 1

Given that : Four numbers are 28, 65, 126, 215.

We need to find odd one from the given numbers.

If a number is divisible by 2, then it is known as even number.

If a number is not divisible by 2, then it is known as odd number.

In 28 both digits are even.

In 65, 6 is even but 5 is odd.

In 126, 2 and 6 are even but 1 is odd.

In 215, 2 is even but 1 and 5 are odd.

Since 28 is the only number with all digits even, therefore 28 is odd one out 28, 65, 126, 215.

Hence, the correct option is A.

Answer 2

Given:

28, 65, 126, 215.

To find:

odd one=?

Solution:

In the given series:

28, 65, 126, 215.

if we separately divide the number and check even-odd condition:

⇒ 28 = both are even numbers

⇒ 65 = 1 odd and 1 ever number

⇒ 126 = 1 odd and 2 even number

⇒ 215 = 2 odd number and 1 is even number

To check the digits only option A is odd.

The final answer is "Option A".