Four of them: 4 times 7 = 28
99 divided by 0.99
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!
Google "Four Fours" and you will find a number of solutions, presented more comprehensively than we can.
How can you make $25.45 using the least number of bills and coins?
7/.7 x 7/.7 = 10 x 10 = 100
((7+7)*7) - 7
Four of them: 4 times 7 = 28
You could go (7+7+7)7=147
eleven to the power of eleven
99 divided by 0.99
5*4+3+2
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!
(8x8)=64
You divide 7 by 4 which is 1.75.
4! - 4 + 4/4
( ( 6 / 6 ) + 6) * 6