Directions to Solve
Choose the correct alternative that will continue the same pattern and replace the question mark in the given series.
16.
2, 5, 9, ?, 20, 27
A. 14 B. 16
C. 18 D. 24
Answer & Explanation
Answer: Option A
Explanation:
The pattern is + 3, + 4, + 5, + 6,…..
So, missing term = 9 + 5 = 14.
View Answer Workspace Report Discuss in Forum
17.
2, 3, 3, 5, 10, 13, ?, 43, 172, 177
A. 23 B. 38
C. 39 D. 40
Answer & Explanation
Answer: Option C
Explanation:
The pattern is + 1, x 1, + 2, x 2, + 3, x 3, + 4, x 4, + 5.
So, missing term = 13 x 3 = 39.
View Answer Workspace Report Discuss in Forum
18.
9, 27, 31, 155, 161, 1127, ?
A. 316 B. 1135
C. 1288 D. 2254
Answer & Explanation
Answer: Option B
Explanation:
The pattern is x 3, + 4, x 5, + 6, x 7,…..
So, missing term = 1127 + 8 = 1135.
View Answer Workspace Report Discuss in Forum
19.
2, 1, 2, 4, 4, 5, 6, 7, 8, 8, 10, 11, ?
A. 9 B. 10
C. 11 D. 12
Answer & Explanation
Answer: Option B
Explanation:
The given sequence is a combination of three series :
I. 1st, 4th, 7th, 10th, 13th terms i.e. 2, 4, 6, 8, ?
II. 2nd, 5th, 8th, 11th terms i.e. 1, 4, 7, 10
III. 3rd, 6th, 9th, 12th terms i.e. 2, 5, 8, 11
Clearly, I consists of consecutive even numbers. So, the missing term is 10.
View Answer Workspace Report Discuss in Forum
20.
Which of the following will not be a number of the series 1, 8, 27, 64, 125,…..?
A. 256 B. 512
C. 729 D. 1000
Answer & Explanation
Answer: Option A
Explanation:
The given series consists of cubes of natural numbers only. 256 is not the cube of
any natural number.