Which of these numbers are divisible by 9?

7,625 4,932 9,180 2,969
1. 9,180 and 4,932
2. 9,180 and 7,625
3. 2,969 and 4,932
4. 2,969, 9,180, and 7,625

6 answers

1. 9,180 and 4,932 (they're the only numbers that when divided by 9 don't leave you with a repeating decimal).
interesting nugget of information

if the sum of the digits of a number is divisible by 9
... then the number is also
To add to R_Scott's answer, you can keep adding the digits of the number until you get to a single number. If that number is 9, it is divisible by 9.

So the number 469589013

4+6+9+5+8+9+0+1+3 = 45
45 can be added as 4+5.

So 469589013 is divisible by 9.The answer is 52,176,557.
9,180 and 4,932 hope it helps :D
thx ash
Thx Ash!
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