Instructions

A series is given, with one term missing. Choose the correct alternative from the given ones that will complete the series.

Question 6

1, 1, 2, 3, 5, ?, 13, 21

Solution

The logic here is number is equal to its sum of preceding two numbers

1 + 1 = 2

2 + 1 = 3

3 + 2 = 5

Similarly the next number is

5 + 3 = 8

$$\therefore\ $$The required number is 8

Hence, the correct answer is Option B

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