Yes it is
It should be noted that any real number can be divided by any other real number, however the result may not be a whole number.
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No. As 9 is smaller than 45 it cannot be divisible by 45. However, 9 is a FACTOR of 45; and 45 is divisible by 9.
Just add up the digits and if that sum is divisible by 9 then the original number is divisible by 9. Example 729 = 7+2+9 = 18 (18 is divisible by 9 therefore 729 is divisible by 9) 123456789 = 1+2+3+4+5+6+7+8+9 = 45 (45 is divisible by 9 therefore 123456789 is divisible by 9)
45 yes, 812 no.
Yes, 72 is divisible by 9. It is not divisible by 8 or 6.
It is: 45