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No factor of 9 has three digits. 450 is a three-digit multiple of 150 (and of 9) with a digit sum of 9.
Yes, yes, and no. 3- sum of digits must be multiple of 3. 6- sum of digits must be multiple of 3 and number must be even (multiple of 2). 9- sum of digits must be multiple of 9. (The sum of the digits here is 21.)
12
Any number whose sum of its digits are equal to a multiple of 3, is divisible by 3. In this instance, the sum of the digits of the number 34215 is equal to 15, which is divisible by 3, and therefore the number is divisible by 3.
A simple division test for 3 is if the sum of the digits of the number in question is equal to a multiple of three. In this case, the sum of the digits of 3405 is equal to 12, therefore, 3405 is divisible by 3. 3405 / 3 = 1135
If the sum of the digits of a given number equals nine or a multiple of nine, nine is a factor of that number.
No factor of 9 has three digits. 450 is a three-digit multiple of 150 (and of 9) with a digit sum of 9.
If that is the case, then three is a factor of the original number.
12
Yes, yes, and no. 3- sum of digits must be multiple of 3. 6- sum of digits must be multiple of 3 and number must be even (multiple of 2). 9- sum of digits must be multiple of 9. (The sum of the digits here is 21.)
12
Any number whose sum of its digits are equal to a multiple of 3, is divisible by 3. In this instance, the sum of the digits of the number 34215 is equal to 15, which is divisible by 3, and therefore the number is divisible by 3.
A simple division test for 3 is if the sum of the digits of the number in question is equal to a multiple of three. In this case, the sum of the digits of 3405 is equal to 12, therefore, 3405 is divisible by 3. 3405 / 3 = 1135
The sum of the digits is also a multiple of 9. And, if the sum of the digits is too large, you can sum those digits and keep going.
144
Yes, because the digits of 261 add up to a multiple of 3.
A number is divisible by 3 if the sum of its digits is a multiple of 3. A number is divisible by 6 if the sum of its digits is a multiple of 3 and it's even. A number is divisible by 9 if the sum of its digits is a multiple of 9.