Using exactly four fours, write expressions equal to each of the numbers from 0 to 25. You may use the addition, subtraction, multiplication, division, square root, and factorial operators. You may combine fours such as .4, .4 repeating, 44, and 444. Make sure you are using the correct order of operations. You may only use parentheses when they are needed. The first few numbers are done for you as examples.
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0 = 44 - 44 |
13 = |
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1 = 44 ÷ 44 |
14 = |
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2 = 4 ÷ 4 + 4 ÷ 4 |
15 = |
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3 = |
16 = |
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4 = |
17 = |
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5 = |
18 = |
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6 = |
19 = |
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7 = |
20 = |
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8 = |
21 = |
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9 = |
22 = |
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10 = |
23 = |
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11 = |
24 = |
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12 = |
25 = |