### Brain Teasers

# 4+4+4+4=1?

Just using addition, subtraction, multiplication, and division, can you form all the numbers from 1 to 10 using exactly four 4's?

You may use parentheses and you can also combine fours to make other numbers (like 44 or 444).

You may use parentheses and you can also combine fours to make other numbers (like 44 or 444).

### Hint

It may be helpful to know that you can make 0 with 4-4 and 1 with 4/4.### Answer

(4+4)/(4+4) = 1(4x4)/(4+4) = 2

(4+4+4)/4 = 3

4+(4-4)/4 = 4

(4x4+4)/4 = 5

4+(4+4)/4 = 6

44/4-4 = 7

4+4+4-4 = 8

4+4+4/4 = 9

(44-4)/4 = 10

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