A series of letters and numbers is given, the terms of which follow a certain definite pattern in groups. However, some terms in the series are missing. Choose the correct sequence from the options.
Z 24 _ Y _ B _ 18 C W 15 _
(A) X
(B) D
(C) 21
(D) A
Choose the correct answer from the options given below:
Answer & explanation
Correct answer: option 3
The correct answer is Option (3) → (D), (C), (A), (B)
The series is made of groups of three terms: a letter, a number, a letter.
The first letters of the groups go backwards from Z: Z, Y, X, W
The numbers fall by 3: 24, 21, 18, 15
The last letters go forwards from A: A, B, C, D
The complete series is Z 24 A | Y 21 B | X 18 C | W 15 D, so the blanks are filled by A, 21, X, D, that is, (D), (C), (A), (B).