972 is one of the numbers that is divisible by both.
NO, it is not divisible by all numbers. This is easy to see if you remember that 27 is an odd number and odd numbers are NOT divisible by 2. Then there is the issue that is is NOT divisible by any number greater than itself. That is a lots of numbers that don't work!
27 is one of them.
621 is divisible by these numbers: 1, 3, 9, 23, 27, 69, 207, 621.
There are 27 such numbers.
972 is one of the numbers that is divisible by both.
Yes. Test a couple numbers divisible by 9--27, 81--and they are all divisible by 3.
NO, it is not divisible by all numbers. This is easy to see if you remember that 27 is an odd number and odd numbers are NOT divisible by 2. Then there is the issue that is is NOT divisible by any number greater than itself. That is a lots of numbers that don't work!
27 is one of them.
621 is divisible by these numbers: 1, 3, 9, 23, 27, 69, 207, 621.
27 is divisible by three because the sum of 2 and 7 is divisible by three. However, this trick only works with the numbers 3 and 9. 27 divided by 3 is 9.
There are 27 such numbers.
ANSWER:The numbers that are divisible by 9 are the numbers whose sum of the digits is a multiple of 9Example: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)
There are 27 numbers between 1 and 100 that are divisible by three but not by five.
27 is composite as it is divisible by 1, 3, 9 and 27
9, 18, 27, 36, ... etc.
1, 3, 9, 27, 81