the four-digit numeral 3AA1 is divisible by 9. What digit does A represent?

Guest Apr 19, 2020

#1**+2 **

a number is divisible by 9 is you can add all the digits up and that number is divisible by 9.

So, we can make the equation 3+2A+1= x (x has to be a multiple of 9)

We can't make x=9 because then A would have to be a decimal.

So, let's make x=18.

3+2A+1=18

4+2A=18

2A=14

A=7

I hope this helped you, guest!

:)

lokiisnotdead Apr 19, 2020