Make up as many expressions with numbers (no variables) as you from three numbers 5, 7 and 8. Every number should be used not more than once. Use only addition, subtraction and multiplication.
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Solution :
using 5,8,7 we need to make expressions
Expressions can be
5+(8+7)5−(8+7)5×(8−7)
5+(8−7)5−(8−7)5×(7−8)
5+(7−8)5−(7−8)5×(8×7)
5+(8×7)5−(8×7)5×(8+7)
8+(5−7)8−(5+7)8×(5+7)
8+(7−5)8−(5−7)8×(5−7)
8+(5×7)8−(7−5)8×(7−5)
8−(5×7)
7+(8−5)7−(5+8)7×(5+8)
7+(5−8)7−(8−5)7×(8−5)
7+(5×8)7−(5−8)7×(5−8)
7−(5×8)
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