Which number will come next in the following series?
5, 12, 31, 68, 129, ..........

Options

A. 220
B. 218
C. 131
D. 190

Answer

A

Explanation

5,12,31,68,129...... implies that
`1^(3) +2^(2),2^(3)+2^(2) ,3^(3) + 2^(3) ,4^(3) + 2^(2),5^(3) + 2^(2)`……..
So , next term should be `6^(3) + 2^(2) = 216+4=220`
A is correct choice .