Test Index

Series and Odd Man out Practice Test 3

Question : 1 of 40

Marks: +1, -0

7, 28, 63, 124, 215, 342, 511

Solution:

Concept:

The series follows the pattern

n^3 - 1

Explanation:

Check the expected terms:

2^3-1=7

3^3-1=26

, but the series has

28

4^3-1=63

5^3-1=124

6^3-1=215

7^3-1=342

8^3-1=511

28

is the wrong term and should be replaced by

26

Answer:

The correct replacement is

26

, i.e. Option A.

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