What should come in place of question mark (?) in the following number series?

96 107 129 162 206 ?

What will come in place of question mark (?) in the following number series:

$2, 15, 41, 80, 132, ?$

What will come in the place of question mark in the given number series:

$142, 70, 34, 16, ?, 2.5$.

What will come in the place of question mark for the following number series:

$21, 37, 40.2, 88.2, 94.6, ?$.

What should come in place of the question mark for the following question:

$256, ?, 190, 167, 148, 131$

What will come in place of the question mark (?) in the following number series?

$?, 15, 75, 525, 4725, 51975$

What should come in place of the question mark in the following question:

$36, 18, 6, 3, 1, ?$

What should come in place of the question mark in the following question:

$18, 29, 42, 53, ?, 77$

What should come in place of the question mark in the following question:

$18, 8, 6, 9, 32, ?$

What will come in place of the question mark (?) in the following number series:

$48, 23, ?, 4.25, 1.125$

What will come in the place of the question mark in the given number series:

$0.75, ?, 6, 36, 288, 2880$.

What should come in place of the question mark for the following question:

$1, 244, 163, 190, 181, ?$