Question - 20, 20, 19, 16, 17, 13, 14, 11, ?, ?
A. 10, 10
B. 10, 11
C. 13, 14
D. 13, 16
Answer -
Option A
Explanation:
Let the missing terms of the series be x and y.
Thus, the sequence 20, 20, 19, 16, 17, 13, 14, 11, x ,y is a combination of two series :
I. 20, 19, 17, 14, x and II. 20, 16, 13, 11, y
The pattern in I is - 1, - 2, - 3,......So, missing term, x = 14 - 4 = 10.
The pattern in II is - 4, - 3, - 2,......So, missing term, y = 11 - 1 = 10.