Test Index

Series and Odd Man out Practice Test 8

Question : 2 of 16

Marks: +1, -0

42, 56, 67, 90, 110, 132

Solution:

Concept:

The sequence is formed by products of consecutive natural numbers.

Explanation:

Check each term as

n(n+1)

6 \times 7 = 42

7 \times 8 = 56

8 \times 9 = 72

, not

67

9 \times 10 = 90

10 \times 11 = 110

11 \times 12 = 132

All other terms fit the pattern, so

67

is the odd term.

Answer:

The wrong term is

67

, i.e. option C.

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