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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