$4, 10, 33, 136, 685, ?$

$3, 13, 27, 50, 87, 143, \dots$ Find the next term.

$35, 49, 63, 77, ?$

$3, 18, 12, 72, 66, 396, ?$

In the following number series,one of the numbers does not fit into the series. Identify the wrong number in the series.
$5 \quad 7.5 \quad 11.25 \quad 17.5 \quad 29.75 \quad 50 \quad 91.25$

$18$	$22$	$38$	$74$
$121$	$(a)$	$(b)$	$(c)$

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