A solution to the four fours problem for the number 33 is: 33 = (4-.4)/.4+4!
(4+4)/4 + 4
4 × ((4 ÷ 4) + 4)=20
Using four fours, you can get 19 with the following sum: 4! - 4 - (4 / 4) That is, four factorial minus four - (four divided by four) - 24 - 4 - (4 / 4) = 19
One way to use four fours to make 25 is 4 + 4 + 4 + √4, which equals 25.
4+4-(4/4)=7
11 = 4/.4 + 4/4
4 + 4 + (4/4) = 9
4*4+4/4 = 17
it is not posible *Ahem*. 4*4+4/sqrt(4)
508 = 44 x sqrt(4) - 4
If you are allowd to use .4 and factorial, the answer will be 4! - (.4 - 4!) / .4