Question

Find the missing number.

9, 18, 27, 36, 45, ___, 63, 72

• A. 52
• B. 54
• C. 57
• D. 53

Answer 1

The correct option is B 54

The multiplication table for 9 is given below:

$9\times 1=9$
$9\times 2=18$
$9\times 3=27$
$9\times 4=36$
$9\times 5=45$
$9\times 6=54$
$9\times 7=63$
$9\times 8=72$
The numbers given are therefore, multiples of 9.
It can be seen that the missing number is 54.