Question : Directions: Select the option that will replace the question mark to complete the given series.
7, 17, 41, 85, ?, 257
Option 1: 155
Option 2: 165
Option 3: 105
Option 4: 150
Correct Answer: 155
Solution :
Given:
7, 17, 41, 85, ?, 257
The pattern is as follows –
So, the required missing number in the series is 155. Hence, the first option is correct.
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