Question : Direction: 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.
7, 12, 22, 42, 82, ?
Option 1: 173
Option 2: 162
Option 3: 183
Option 4: 143
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Correct Answer: 162
Solution :
Given:
7, 12, 22, 42, 82, ?
Here, the pattern is, that the number added is multiplied by 2 in every step.
7 + 5 = 12; 12 + 10 = 22; 22 + 20 = 42; 42 + 40 = 82; 82 + 80 = 162
So, the series becomes –
7, 12, 22, 42, 82,
162
Hence, the second option is correct.
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