NIELIT 2017 July Scientist B - Section A: 12

Question

Find the odd one in the following series:

$2, 5, 10, 17, 26, 37, 50, 64$

• A. $50$
• B. $26$
• C. $37$
• D. $64$

Answer 1

The pattern of the given series is as follows:

• $1^2+1=2$
• $2^2+1=5$
• $3^2+1=10$
• $4^2+1=17$
• $5^2+1=26$
• $6^2+1=37$
• $7^2+1=50$
• $8^2+1=65$ ($64$ is out of pattern)

Option $(D)$ is correct.

Answer 2

check for perfect square only 64 is there so ODD. option D