1. find the digit that makes 2,440 divisible by 9
a 6
b 8~ my answer
c 5
d 7
B is correct, if you mean to replace the 0 with some other digit.
Read up on casting out nines.
-~- for gawds sake, someone post the answers
To find the digit that makes 2,440 divisible by 9, you need to add up all the digits in the number and see if the sum is divisible by 9.
Let's add up the digits of 2,440:
2 + 4 + 4 + 0 = 10
The sum of the digits is 10. Now, we need to check if 10 is divisible by 9.
Since 9 is not a factor of 10, we can conclude that none of the digits (6, 8, 5, or 7) would make 2,440 divisible by 9.
Therefore, None of the options (a, b, c, or d) is correct.