Question 18

Which number will replace the question mark (?) in the following series?
3, 7, 16, 35, ?, 153

Solution

Lets try to figure out the pattern in the series.

3

$$(3 \times 2) + 1 = 7$$

$$(7 \times 2) + 2 = 16$$

$$(16 \times 2) + 3 = 35$$

$$(35 \times 2) + 4 = 74$$

$$(74 \times 2) + 5 = 153$$

So , the answer would be Option b)74.

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Which number will replace the question mark (?) in the following series?3, 7, 16, 35, ?, 153