Question

Complete the given series:

$144,121,100,81,......$

• A. $80$
• B. $72$
• C. $64$
• D. $60$

Answer 1

The correct option is C $64$

Decrease number by 1 and then square it.
${12}^2\to 144$
${11}^2\to 121$
${10}^2\to 100$
$9^2\to 81$
$8^2\to 64$
Hence, option $D$ is the correct answer.