13, 32, 24, 43, 35, ?, 46, 65, 57, 76
Answer: Option C
Explanation:
The given sequence is a combination of two series:
I. 13, 24, 35, 46, 57 and II. 32, 43, ?, 65, 76
The pattern in both I and II is + 11. So, missing term = 43 + 11 = 54.
22, 24, 28, ?, 52, 84
Answer: Option A
The pattern is + 2, + 4, + 8, + 16,.....
So, missing term = 28 + 8 = 36.
3, 15, ?, 63, 99, 143
Answer: Option B
The terms of the given series are (22 - 1), (42 - 1),....., (82 - 1), (102 - 1), (122 - 1).
So, missing term = (62 - 1) - (36 - 1) = 35.
90, 180, 12, 50, 100, 200, ?, 3, 50, 4, 25, 2, 6, 30, 3
Clearly, 90 = 30 x 3, 180 = 6 x 30, 12 = 2 x 6, 50 = 25 x 2, 100 = 4 x 25, 200 = 50 x 4.
So, missing term = 3 x 50 = 150.
48, 24, 96, 48, 192, ?
The pattern is ÷ 2, x 4, ÷ 2, x 4, .....
So, missing term = 192 ÷ 2 = 96.
