Question

$121,117,108,92,67,?$

• A. $31$
• B. $29$
• C. $41$
• D. $37$

Answer 1

Answer: (A)

$31$

We have,

$121,117,108,92,67,?$

from given series we conclude that.

$1^{st}term=121$

$2^{nd}term=1^{st}term-2^2=121-4=117$

$3^{rd}term=2^{nd}term-3^2=117-9=108$

$4^{th}term=3^{rd}term-4^2=108-16=92$

$5^{th}term=4^{th}term-5^2=92-25=67$

So,

$6^{th}term=5^{th}term-6^2=67-36=31$

Hence, option $A$ is correct answer.