Math
posted by bob .
Determine the digits of Y from these clues.
The digits of Y add to 18.
The first digit is 3 times the third digit.
The second digit is 2 times the third digit.
Y is a three digit number.

Math 
Ms. Sue
_ _ _
First: 9, 6, or 3
Third: 3, 2, or 1
Second: 6, 4, or 2
Which combination adds up to 18?
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