$2, 12, 36, 80, \dots$

Consider the following table:

$2$	$17$	$121$	$729$
$5$	$(a)$	$(b)$	$(c)$

Which of the following numbers will come in place of $(b)$?

Find out the odd number from the given sequence: $95, 86, 73, 62, 47, 30, 11$.

$4, 30, 160, 810, 4060, \dots$

In the following number series,a wrong number is given. Find out that wrong number.
$2 \quad 11 \quad 38 \quad 197 \quad 1172 \quad 8227 \quad 65806$

$9, 27, 31, 155, 161, 1127, ?$