You can use the digits 1,2,and 3 once only and any mathematical symbols you are aware of, but no symbol is to be used more than once. The challenge is to see if you can make the largest numbers.
Here are some numbers to set the ball rolling: 321, 21to the third power, (3/.1)to the second power.
(levik: I guess this is more of a competition)
(In reply to
Just a guess! by Edwin)
Something similar had occurred to me(except I was thinking limits). Unfortunately, you have to use your free variable, in your case n, twice.