Question

Find the value of a+b+c if 173a is divisible by 9, 173b is divisible by 11, and 173c is divisible by 6.

Answer 1

does 173a mean 173_ where the last digit of the number is a, or does it mean 173*a?

Answer 2

If it's that the last digit of the number is a, then you can use divisibility rules. (Here's a chart that I found in Google images: https://s-media-cache-ak0.pinimg.com/736x/1b/41/c2/1b41c2fb8f20021e11595a48986e2a13.jpg)
I would set statements like
1+7+3+a is divisible by 9
from this you can find what a should be, and so on for b and c. let me know what you get, and I can tell you if I agree!

Answer 3

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