4/4 X 4/4 = 1.
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Four fours can equal four with the following equation:4 + 4 * (4 - 4) = 4 (always follow the order of operations)
44 / 4 + root(4) is one solution. You can find additional solutions in the Wikipedia article "Four fours".
There are six fours in twenty-four.
One way to use four fours to make 25 is 4 + 4 + 4 + √4, which equals 25.
Once with two remaining