24, 60, 120, 210, ?

Select the missing number from given responses.

Complete the series choosing the missing letter

__ aaba __ aa__ __aa

Find the missing number?

2, 3, 5, 6 ,? , 9, ?, 12

Select the option that represents the letters that, when placed from left to right in the following blanks, will complete the letter series.
S C R _ W S _ R _ W _ C _ G W S _ R H _

24, 60, 120, 210, (…)

1,9,17,33,49,73 (…)