Question

- How many numbers in beween 9 to 54
are there which are exactly divisible by 9
but not by 3?​

Answer 1

Step-by-step explanation:

it is not possible as 9is divible by 3

Answer 2

Step-by-step explanation:

The numbers between 9 and 54 are 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52 and 53.

The numbers which are divisible by 3 are 12, 15, 18, 21, 24, 27, 30, 33, 36, 39, 42, 45, 48 and 51.

The numbers which are divisible by 9 are 18, 27, 36 and 45.

Since 9 = 3 × 3, it is not possible for any number to exist with the condition to be exactly divided by 9, but not by 3.

However there are numbers which are exactly divisible 3, but not by 9 and they are 12, 15, 21, 24, 30, 33, 39, 42, 48 and 51.