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3 Calculează :
a) 5 x 6 x 1
10 x 1 x 2
4
b) 8 x 5 x 0
1 x 1 x 10
c) 5 x 2 x 10
9 x 8 x 0
d) 10 x 10 x 1
3 x 0 x 7