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 _

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

TSF, RPJ, PMN, NJR, ?

Which of the following numbers will replace the question mark (?) in the given series?

7, 19, 4, ?, 1, 25

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

31, 44, 58, 73, 89, ?

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

16, 20, 29, 45, 70, ?

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

BOND, FKRZ, JGVV, NCZR, ?

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

B, D, G, L, S, ?

Select the number from the given options that can replace the question mark (?) in the following series.
205, 222, 241, 264, 293, ?