Three-digit numbers

How many three-digit numbers are from the numbers 0 2 4 6 8 (with/without repetition)?

Correct result:

x =  100
y =  48


x=4 5 5=100x=4 \cdot \ 5 \cdot \ 5=100
y=4 4 3=48y=4 \cdot \ 4 \cdot \ 3=48

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