Question

Fill in the missing number in the series.
2 3 6 15 ___?____ 157.5 630

• A. 45

Answer 1

The correct option is A 45
2, 3, 6, 15, ______, 157.5, 630

$2\times 1.5=3$
$3\times 2=6$
$6\times 2.5=15$
$15\times 3=45$
$45\times 3.5=157.5$
$157.5\times 4=630$

Hence the answer is 45.
45 is missing term of the series.