Number Series Questions

Which of the following groups of alphabets should replace the blank spaces so that the group of alphabets, given in bold, follow a logical pattern from the preceding and the following group of alphabets?

b w _ y z a,  d s t u v _ ,  _ o p q r e 

In the following question, select the missing number from the given series.

46, 41, 35, 30, ?, 19, 13

In the following question, select the missing number from the given series.

11, 13, 16, 18, 21, ?

Find out the wrong term in the series 83,92,85,90,85,88

In the following question, select the missing number from the given series.

1728, 864, 432, 216, ?

Which one is wrong in the given series?

49 36 25 18 9 4

Choose the correct alternative which will complete the following series.

4, 8, 12, 24, 18, ?

In the following question a letter-series is given, in which some letters are missing. The missing letters are given in the proper sequence as one of the alternatives. Choose the correct alternatives. ab __ d __ aaba __ na _ badna _ b