OpenStudy (anonymous):

Puzzle:

5 years ago
OpenStudy (anonymous):

1. Use only 3 three's and any mathematical operations to obtain 72.

5 years ago
OpenStudy (anonymous):

2. Use only two 5's and any of the mathematical operaters to obtain 6.

5 years ago
OpenStudy (anonymous):

The question says ONLY using three 3's. I'll clarify a little. Suppose it wanted to use 3 three's to get, say 21, Accepted : $(3!)*3 + 3$

5 years ago
hartnn (hartnn):

can i use gamma function ? :P

5 years ago
hartnn (hartnn):

3!*3!*(gamma 3) = 72

5 years ago
OpenStudy (anonymous):

72=(3!)^3 /3

5 years ago
OpenStudy (anonymous):

@sauravshakya You got it! @hartnn I did not think of that one. Nice. How about the second one?

5 years ago
OpenStudy (anonymous):

$5+\frac{d5}{dx}!$

5 years ago
OpenStudy (anonymous):

^^ Not allowed.

5 years ago
OpenStudy (anonymous):

Doesn't it count as an operator? $5+(D5)!$If you want to be pedantic...

5 years ago