Study the following arrangement carefully and answer the question given below:

R D A K 7 B I 3 M J E N 6 7 U Z V 1 W 3 H 4 F Y 8 P 6

How many such numbers are there in the above sequence each of which is immediately preceded by a consonant and immediately followed by a vowel ?

Find the missing term in the series:

B12D, G32I, L52N, ?, V92X

What will be the 21st term of the series given below ?

3, 9, 15, ........

How many 7s immediately preceded by 6 but not immediately followed by 4 are there in following series

7, 4, 2, 7, 6, 4, 3, 6, 7, 5, 3, 5, 7, 8, 4, 3, 7, 6, 7, 2, 4, 0, 6, 7, 4, 3

Select the combination of letters that when sequentially placed from left to right in the gaps of the given letter series will complete the series.

cc__ceecde_ _ _ccde_ee

Select a figure from the answer figures (1), (2), (3), and (4) which would continue the series indicated by the four figures of problem.

In the following question, an alphanumeric series is given as

5FU, 9IS, 13LQ, ?, 21RM

Choose the missing term (?) out of the given alternatives.