Asked by Anonymous

7. Below, the standard addition algorithm is being used to add three two-digit numbers.

4z
27
+x5
y14

If x, y and z each represent a different digit from 0 to 9, what is the value of (x)(y)(z)?
Answered by Steve
Come on - this one is easy.

You have z+7+5 ends in 4
7+5=12, so z=2

Now work with that same idea to get x.

Remember that no one said that x,y,z had to be different from all the other digits already present.
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