Find the missing number?

Find the missing number?

Find the missing number?

2, 4, 12, 48, 240,?

Select the missing number from the given response.

Select the letter-cluster from among the given options that can replace the question mark (?) in the following series.
GF, KI, OL, SO, ?

Select the number that can replace the question mark (?) in the following series.   

16, 20, 29, 45, 70, ?

Find the missing number from the given responses in the following questions?