Question : Directions: In the following question a series is given, with one number missing. Select the missing number from the given alternatives.
3, 7, 16, 35, ?
Option 1: 73
Option 2: 74
Option 3: 78
Option 4: 82
Correct Answer: 74
Solution :
Given:
3, 7, 16, 35, ?
Add consecutive natural numbers to twice of each term to obtain the next term in the series
–
(3 × 2) + 1 = 6 + 1 = 7
(7 × 2) + 2 = 14 + 2 = 16
(16 × 2) + 3 = 32 + 3 = 35
(35 × 2) + 4 = 70 + 4 = 74
The missing number is 74. Hence, the second option is correct.
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