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Q: What three digit number is a multiple of 9?

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They are 9,18,27, and 36.A general rule for finding if a number is a multiple of 9:1: Add the digits of the number.2: Repeat step 1 until you get a single digit.3a: If the digit is 9, your original number is a multiple of 9.3b: If the digit is not 9, then your original number is not a multiple of 9.Examples:The number is: 223243628Add the digits: 2+2+3+2+4+3+6+2+8=32Add the digits: 3+2=55≠9223243628 is not a multiple of 9.The number is: 27909117983733354999874Add the digits: 2+7+9+0+9+1+1+7+9+8+3+7+3+3+3+5+4=153Add the digits: 1+5+3=99=927909117983733354999874 is a multiple of 9

It is 9

Using prime factorization, there are 2 three digit numbers with 9 factors: 512 and 768. There are no three digit numbers with 10 or more prime factors. 512=2^9 and 768=3*2^8

Here are two digit numbers that are divisible by both 6 and 9: 18 (which is the least common multiple) 36 54 72 90

Related questions

No factor of 9 has three digits. 450 is a three-digit multiple of 150 (and of 9) with a digit sum of 9.

108 is a multiple of 9 because 12 times 9 = 108

9 isn't prime, but one three-digit multiple of 18 is 108.

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90

The least three-digit number that is divisible by both 5 and 9 is 135.

If the number is even, it is a multiple of 2 If the sum of the digits make a number divisible by 3, the number is a multiple of 3 If the number ends in 5 or 0, the number is a multiple of 5 If the number is divisible by 2 and 3, the number is a multiple of 6 If the sum of the digits make a number divisible by 9, the number is a multiple of 9

The question asserts something that is not true. For example, 2000 - 1000 = 1000. 1000 is not a multiple of 9.

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Yes, it is. It can be determined in moments, without doing the division, by calculating the core digit of the number, which is 9. Every number with a core digit value of 9 is a multiple of 9, and therefore a multiple of 3.

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