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At the end of our lecture today, the lecturer gave us this simple yet impossible puzzle.

My friend and I have tried to find the answer but in vain...

Using only the numbers 3, 3, 3 and 3 once and using only the four arithmetic + - * / once can you make the number 7.

The closest I have got is 6 or 8 but not 7.

3*3 all / 3 and then + 3 = 6

or

3*3 then - 3/3 = 8

How to find 7?? Is this actually possible?

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# Using only the numbers 3, 3, 3 and 3 once and + - * / once find 7?

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