ANSWER:
The numbers that are divisible by 9 are the numbers whose sum of the digits is a multiple of 9
Example:
27 = 2 + 7 = 9 (9 is a multiple of 9 thus 27 is divisible by 9)
99 = 9 + 9 = 18 (18 is a multiple of 9 thus 99 is divisible by 9)
Chat with our AI personalities
All numbers divisible by 3 are NOT divisible by 9. As an example, 6, which is divisible by 3, is not divisible by 9. However, all numbers divisible by 9 are also divisible by 3 because 9 is divisible by 3.
Yes; all numbers that are divisible by 9 are divisible by 3.
All numbers divisible by 9 are divisible by 3; since 9 = 3 x 3 all multiples of 9 are also multiples of 3. However, all numbers divisible by 3 are not divisible by 9, eg 6 = 2 x 3 but 6 is not divisible by 9 (since 6 is not a multiple of 9) - it only takes one counter example to disprove a theory.
no, 18 is divisible by 9 but not by 4.
They are infinite.