Choose the correct alternative that will continue the same pattern and replace the question mark in the given series.
1, 2, 6, 7, 21, 22, 66, 67, ?
Answer: Option C
Explanation:
The pattern is + 1, x 3, + 1, x 3, + 1, x 3, + 1,.....
So, missing term = 67 x 3 = 201.
0.5, 0.55, 0.65,0.8,?
The pattern is + 0.05, + 0.10, + 0.15,.....
So, missing term = 0.8 + 0.20 = 1.
0, 2, 3, 5, 8, 10, 15, 17, 24, 26, ?
Answer: Option D
The given sequence is a combination of two series :
I. 0, 3, 8, 15, 24, ? and II. 2, 5, 10, 17, 26
The pattern in each one of I and II is + 3, + 5, + 7, + 9, .....
So, missing term = 24 + 11 = 35.
11, 13, 17, 19, 23, 25, ?
The pattern is + 2, + 4, + 2, + 4, .....
So, missing term = 25 + 4 = 29.
5, 2, 7, 9, 16, 25, ?
Answer: Option A
Each term in the series, except the first two terms, is the sum of the preceding two
terms.
So, missing term = 16 + 25 = 41.
