Question : Directions: In the following question a series is given, with one number missing. Choose the correct alternative from the given ones that will complete the series.
3, 6, 11, 20, ?
Option 1: 42
Option 2: 41
Option 3: 37
Option 4: 47
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Correct Answer: 37
Solution :
Given:
3, 6, 11, 20, ?
Let's apply the pattern –
3 × 2 – 0 = 6 – 0 = 6
6 × 2 – 1 = 12 – 1 = 11
11 × 2 – 2 = 22 – 2 = 20
20 × 2 – 3 = 40 – 3 = 37
Hence, the third option is correct.
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