Question

What number will replace the ?

$2,9,28,65,?$

• A. $121$
• B. $195$
• C. $126$
• D. $103$

Answer 1

The correct option is C $126$

Method used to form the series is $(1{)}^3+1,(2{)}^3+1,(3{)}^3+1,(4{)}^3+1$,...
Therefore, the missing number is $(5{)}^3+1=126$