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Any multiple of 3 is divisible by 3. 3 x 1 = 3
3 x 2 = 6
3 x 3 = 9
3 x 4 = 12
3 x 5 = 15
3 x 6 = 18
3 x 7 = 21
3 x 8 = 24
3 x 9 = 27
3 x 10 = 30 The digits of a number that is divisible by 3 will add up to a number that is divisible by 3. For example, 1230 has digits that add up to 6, so it is divisible by 3. As another example, 15762 has digits that add up to 21, so it is divisible by 3.
If your initial result is too large for you to know if it is divisible by 3, add up the digits of the new number to see if it is divisible by 3. For example, 155837955 has digits that add up to 48, whose digits add up to 12, so it is divisible by 3.
Multiples of 3.
3, 6, 9, 12, 15 and so on.
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What counterexample to the statement all odd numbers are divisible be 3?
5, 7, a bunch of numbers that are odd are not divisible by 3. numbers that are divisible by three can have all their numbers added together and come out with a number that is divisible by 3.
How many numbers between 1 and 600 are divisible by 2 and 3?
between 1 and 600 inclusive there are:300 numbers divisible by 2200 numbers divisible by 3100 numbers divisible by both 2 and 3400 numbers divisible by 2 or 3.
Are all numbers divisible by 9 also divisible by 3?
Yes. Test a couple numbers divisible by 9--27, 81--and they are all divisible by 3.
Are all numbers that are divisible by 3 divisible by 6?
No.
How many 3 digit numbers are divisible by 6 in all?
There are 151 3-digit numbers that are divisible by 6.
