4 + 4 + (4/4).
The best way to count by fours. If you count by fours you can go to twenty without using other numbers. In the sequence of four, eight, 12, 16, and 20. Sequence counting allows you to follow a pattern to reach the next logical number.
How about, "I don't like the number thirteen" or "My favorite number is Singin' in the Rain."
101
I am not aware of a solution using the four basic operations of arithmetic, but otherwise: 129 = [(4^4)/sqrt(4)] + sqrt(sqrt(sqrt(sqrt...(sqrt(4))...))) * * * * * * * * * * * * No matter how many times you square root it, it will not equal 1 To the OP. I have spend a lot of time on this one. Just wanting to make sure that the correct number is 129 and you are sure you are using only 4 fours. It would work out great if using 5 fours. If you made a mistake, correct it and I'll check back. In the mean time, I'll continue thinking about a solution for 4 fours and 129.
Google "Four Fours" and you will find a number of solutions, presented more comprehensively than we can.
2+22=)
4 /5
Only if you subtract three.
13
Using only multiplication it is not possible.
As a solution to the four fours problem (using the number four no more than four times to come up with the solution, 31 is equal to (4!+4)/4+4!
4