F _ U 6 _ 9 I _ T 7 _ 20 _ 4 D 23 Options: A . &nbsp11, G, 16, K, U B . &nbsp13, H, 15, L, M C . &nbsp17, J, 19, R, S D . &nbsp21, R, 18, G, W

F _ U 6 _ 9 I _ T 7 _ 20

Question

Directions: In each of the following questions, a series of letters and numbers is given, the terms of which follow certain definite pattern in groups. However, some terms in the series are missing, which are given in the same order as one of the alternatives below the series. Choose the correct alternative.

[B.T.M. 2005]

F _ U 6 _ 9 I _ T 7 _ 20 _ 4 D 23

Options:

A . 11, G, 16, K, U

B . 13, H, 15, L, M

C . 17, J, 19, R, S

D . 21, R, 18, G, W

Answer: Option D
Answer: (d)
From the alternatives, it is clear that the series can be divided into 4 groups of four terms each _ each group comprising of two letters and two numbers, occurring alternately.
F _ U 6 / _ 9 I _ / T 7 _ 20 / _ 4 D 23 4D
indicates that in a group, the number in the second place denotes the position of the letter in the third place, in the English alphabet.
T 7 _ 20 indicates that in a group, the number at the fourth place denotes the position of the letter in the first place, in the English alphabet.
Thus, putting A = 1, B = 2, ....., Y = 25, Z = 26,
we have : 1st missing term = U = 21;
3rd missing term = 7th letter = G;
5th missing term = 23rd letter = W.

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