$120, 15, 105, 17.5, 87.5, ?$

In each of the following questions a number series is given. After the series a number is given followed by $(a),$ $(b),$ $(c),$ $(d),$ and $(e).$ You have to complete the series starting with the number given,following the sequence of the original series and answer the questions that follow the series.

$85$	$43$	$44$	$67.5$	$137$	$345$
$125$	$(a)$	$(b)$	$(c)$	$(d)$	$(e)$

What will come in place of $(c)?$

$7, 20, 46, 98, 202, ?$

$1$	$9$	$65$	$393$
$2$	$(a)$	$(b)$	$(c)$

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

What is the sum of the first $13$ terms of an arithmetic progression if the first term is $-10$ and the last term is $26$?

Find out the odd number from the given sequence: $14, 49, 63, 72, 77, 91$.