Question

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

Answer 1

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

Answer 2

interesting nugget of information

if the sum of the digits of a number is divisible by 9
... then the number is also

Answer 3

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.

Answer 4

9,180 and 4,932 hope it helps :D

Answer 5

thx ash

Answer 6

Thx Ash!