series completion verbal reasoning questions

Directions to Solve

Choose the correct alternative that will continue the same pattern and replace the question mark in the given series.

6.

1, 2, 6, 7, 21, 22, 66, 67, ?
A.     70    B.     134
C.     201    D.     301
Answer & Explanation

Answer: Option C

Explanation:

The pattern is + 1, x 3, + 1, x 3, + 1, x 3, + 1,…..

So, missing term = 67 x 3 = 201.

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7.

0.5, 0.55, 0.65,0.8,?
A.     0.9    B.     0.82
C.     1    D.     0.95
Answer & Explanation

Answer: Option C

Explanation:

The pattern is + 0.05, + 0.10, + 0.15,…..

So, missing term = 0.8 + 0.20 = 1.

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8.

0, 2, 3, 5, 8, 10, 15, 17, 24, 26, ?
A.     28    B.     30
C.     32    D.     35
Answer & Explanation

Answer: Option D

Explanation:

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.

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9.

11, 13, 17, 19, 23, 25, ?
A.     26    B.     27
C.     29    D.     37
Answer & Explanation

Answer: Option C

Explanation:

The pattern is + 2, + 4, + 2, + 4, …..

So, missing term = 25 + 4 = 29.

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10.

5, 2, 7, 9, 16, 25, ?
A.     41    B.     45
C.     48    D.     52
Answer & Explanation

Answer: Option A

Explanation:

Each term in the series, except the first two terms, is the sum of the preceding two

terms.

So, missing term = 16 + 25 = 41.