Verbal Reasoning - Mental Ability Questions

A series is given with one term missing. Choose the correct alternative from the given ones that will complete the series.

30, 60, 360, 3600, ?

In the following question, select the number which can be placed at the sign of ? from the given alternatives.

In the following question, select the missing number from the given series.672, 666, 660, 654, ?

Select the related word/letters/numbers from the given alternatives:
3 : 243 :: 5 : ?

If 3 % 2 = 50, 2 % 4 = 60 then what is the value of 5 % 4 = ?

In a certain code language, if COTTON is coded as 325526 and WOOLEN is coded as 122976, then TOWEL will be coded as?

Which one set of letters when sequentially placed at the gaps in the given letter series shall complete it ?

a_ ca_c_dc_d_ad_

If 3 # 4 % 8 = 6 and 9 % 4 # 3 = 12, then 12 % 6 # 24 = ?