Question : Directions: Which number should replace the question mark (?) in the following number series?
32, 54, 98, 186, ?, 714
Option 1: 452
Option 2: 450
Option 3: 362
Option 4: 354
Correct Answer: 362
Solution :
Given:
32, 54, 98, 186, ?, 714
Multiply the previous term in the series by 2 and then subtract 10 from the resultant to get the next term of the series.
(32 × 2) – 10 = 64 – 10 = 54
(54 × 2) – 10 = 108 – 10 = 98
(98 × 2) – 10 = 196 – 10 = 186
(186 × 2) – 10 = 372 – 10 = 362
(362 × 2) – 10 = 724 – 10 = 714
So, 362 is the missing number. Hence, the third option is correct.
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