Question

$9,3,18,6,36,12.....$Missing letter in this series.

Answer 1

Step-1: Understand the pattern from the given question.

The given series is $9,3,18,6,36,12.....$

There are two patterns in the given series.

First pattern is $9,18,36$

This pattern follows: $9+9=18,18+18=36$( addition of the preceding terms to itself to get the next term in the series)

The second pattern is$3,6,12$

Therefore, the pattern follows: $3+3=6,6+6=12$( addition of the preceding terms to itself to get the next term in the series)

Step-2: Find the missing term

For the first pattern; $36+36=72$( $36$is the last given number in the first pattern of the series, so we need to add $36$to itself to get the next term in the series)

For the second pattern; $12+12=24$( $12$is the last given number in the second pattern of the series, so we need to add $12$to itself to get the next term in the series)

Hence, the missing numbers are $72$ and $24$

So, the series is $9,3,18,6,36,12,72,24,\dots$