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Earn +20 ptsQ: What digits number add up to 8?
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What is a odd prime number which digits add up to 8 and is less than twenty but has 2 digits?
17
When can a number divided by 3?
If the digits of a number add up to a multiple of 3, then the number can be divided by 3. For example, the digits of 852 add up to 8 + 5 + 2 = 15. Since 15 is divisible by 3, 852 is divisible by 3.
Why do no digits of a prime number add up to 9?
Because they're in multiples of three - a quick way to tell if a number is a multiple of three is to add up the digits and see if the digits add up to a multiple of three e.g 576, 5+7+6=18, 1+8=9, 9 is a multiple of three
What is a spook number-?
8161 is a Spook Number. It is made up of digits that are not 0s. All the digits separately add up to give double the first digit. 8+1+6+1=16 2x8=16
What is 8 8 5 6 3 2 equeal?
Six digits that add up to 59
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