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Any even number divisible by 9, if the sum of the digits is divisible by 9. If it's an even number divisible by 9, it's divisible by 18.
no, 18 is divisible by 9 but not by 4.
18 is divisible by 1, 2, 3, 6, 9, and 18.
The sum of the factors are divisible by 9. Ex: 738 7+3+8=18 18/9=2
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)