1.

Make up as many expressions with numbers (no variables) as you can from three numbers 5, 7 and 8. Every number should be used not more than once. Use only addition, subtraction and multiplication. (Hint: Three possible expressions are 5 + (8 − 7), 5 − (8 − 7), (5 × 8) + 7; make the other expressions.)

Answer»

Make up as
many expressions with numbers (no variables) as you can from three
numbers 5, 7 and 8. Every number should be used not more than once.
Use only addition, subtraction and multiplication.



(Hint: Three possible expressions are 5 + (8 − 7), 5 − (8
− 7), (5 × 8) + 7;


make the
other expressions.)



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