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# A Nine Puzzle

10 replies to this topic

### #1 Debasis

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Posted 11 March 2013 - 01:19 PM

Use three 9's and arrange them using the mathematical signs to form the number one.

Spoiler for Hint

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### #2 Utkrisht123

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Posted 11 March 2013 - 01:56 PM   Best Answer

Spoiler for I think

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### #3 BobbyGo

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Posted 11 March 2013 - 03:00 PM

Spoiler for without subtraction

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### #4 Utkrisht123

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Posted 11 March 2013 - 03:44 PM

Spoiler for another method

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### #5 Debasis

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Posted 12 March 2013 - 09:35 AM

Spoiler for another method

Spoiler for quote

Edited by Debasis, 12 March 2013 - 09:37 AM.

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### #6 Perhaps check it again

Perhaps check it again

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Posted 02 February 2014 - 11:58 PM

((9 - 9)9)! = 1

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### #7 Perhaps check it again

Perhaps check it again

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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

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Posted 03 February 2014 - 04:11 AM

(sqrt(9)*sqrt(9))/9

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### #9 Perhaps check it again

Perhaps check it again

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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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### #10 skca

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Posted 04 February 2014 - 10:16 AM

9^(9-9)=1
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