Use the divisibility rules:
2- is the whole number even?
3-if you add up the digits of hte number can 3 go into it? For Example: 4+0+9+5= ? can 3 go into it?
5- does the whole number end in 5 or 0?
9 - do the digits of the number add to a multiple of 9
10- does the whole number end in 0?
2-no
3-yes
5-yes
9-yes
10-no
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Yes, it is divisible by 2, 3 and 9, but is not exactly divisible by 5 or 10.
It is evenly divisible by 2 and 10 but not by 3 and 9.
20 is divisible by 2, 5 and 10. It is not exactly divisible by 3 or 9.
It is divisible by 2, 5 and 10, but not 3 and 9.
29,178 is divisible by 2, 3 and 9, not by 5 or 10.