Use three 9's and arrange them using the mathematical signs to form the number one.
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A Nine Puzzle
Posted 12 March 2013 - 09:35 AM
Spoiler for another method
Edited by Debasis, 12 March 2013 - 09:37 AM.
Posted 03 February 2014 - 02:00 AM
(9*(9 - 9))! = 1
((9 - 9)/9)! = 1
I was looking for the square root symbol to do:
(9 - sqrt(9*9))! = 1
Posted 03 February 2014 - 07:36 AM
BMAD, I purposely did not include any solution like yours, because the OP in post # 1 and post # 5
stated that he/she wanted a subtraction sign used among the mathematical signs.
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