Question : Directions: In the following question a series is given, with one term missing. Choose the correct alternative from the given ones that will complete the series.
6, 10, 18, 34, ?, 130
Option 1: 78
Option 2: 52
Option 3: 66
Option 4: 94
Correct Answer: 66
Solution :
Given:
6, 10, 18, 34, ?, 130
In the given series, the difference between the numbers is double the difference between the previous numbers.
6 + 4 = 10;
10 + (4 × 2) = 10 + 8 = 18;
18 + (8 × 2) = 18 + 16 = 34;
34 + (16 × 2) = 34 + 32 = 66;
66 + (32 × 2) = 66 + 64 = 130
So, the missing number in the series is 66. Hence, the third option is correct.
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