Series and Odd Man out Practice Test 7

Question : 19 of 40

Marks: +1, -0

6, 10, 20, 30, 42

Solution:

The terms of the series are

(3^2 - 3), (4^2 - 4),(5^2 - 5), (6^2 - 6), (7^2 - 7)

.
= (9 - 3), (16 - 4), (25 - 5), (36 - 6), (49 - 7)
= 6, 12, 20, 30, 42.
So, 10 is wrong and must be replaced by 12.

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