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What Does Divisible By mean?
If you divide one number by another, the result is a whole number WITHOUT a remainder.
Link to the above chart
Divisibility Rules
Divisible
When one number can be divided by another and the result is an exact whole number.
Example: 15 is divisible by 3, because 15 ÷ 3 = 5 exactly
But 9 is not divisible by 2 because 9 ÷ 2 is 4 with 1 left over.