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.
1, 2, 2, 4, 8, 32, ?
Option 1: 128
Option 2: 198
Option 3: 256
Option 4: 312
Correct Answer: 256
Solution :
Given:
1, 2, 2, 4, 8, 32, ?
From the third term onwards, each term is the multiplication of the previous two terms in the series –
2 × 1 = 2; 2 × 2 = 4; 4 × 2 = 8; 8 × 4 = 32; 32 × 8 = 256
So, 256 is the missing term of the given series. Hence, the third option is correct.
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