(4x4)+(4/4)-4
The above uses five 4's. An answer, using factorials, and only four is:
(4!+4-sqrt(4))/sqrt(4)
yrs
Probably 45$
You can get 13 using four 4s by using the following expression: ( 4 \times 4 - \frac{4}{4} ). This simplifies to ( 16 - 1 = 15 ). However, if aiming for 13 specifically and reconsidering the operations, another approach could involve using factorials or square roots, but a common way is ( 4 + 4 + 4 + \frac{4}{4} ), which equals 13.
44-4/4
44 divided by .44
4+4-(4/4)
Google "Four Fours" and you will find a number of solutions, presented more comprehensively than we can.
4+4+(4-4) = 4
The answer is 4! - [(4+4)/4]
(4x4)-(4/4) = 15
4! - 44/4 = 24 - 11 = 13
4!/4 - 4/4 = 5