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Author Topic:   Simple but fun math problem
Straggler
Member
Posts: 10333
From: London England
Joined: 09-30-2006


Message 16 of 21 (388721)
03-07-2007 12:38 PM
Reply to: Message 13 by Modulous
03-07-2007 12:21 PM


5
Answer for 5 is 7+(2*.5)=8
I am stumped on 7 too
Edited by Straggler, : No reason given.

This message is a reply to:
 Message 13 by Modulous, posted 03-07-2007 12:21 PM Modulous has not replied

  
Percy
Member
Posts: 22392
From: New Hampshire
Joined: 12-23-2000
Member Rating: 5.3


Message 17 of 21 (388724)
03-07-2007 12:48 PM
Reply to: Message 15 by Zawi
03-07-2007 12:36 PM


Progress so far...
Wounded King seems to have all but 5, 7 and 8. I don't know what a "..." operator is, but it isn't one of the operators listed for this problem.
Discreet Label claims to have all but 8 and 9.
Zawinul found that 0 also has an answer, he has 8, and he claims all the rest but 5 and 7.
Modulus has all but 7.
I didn't intend my hints to be misleading, but I didn't want to give away the answers, either. Apologies if they've sent anyone off in the wrong direction.
--Percy
Edited by Percy, : Update summary.

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 Message 19 by Modulous, posted 03-07-2007 12:54 PM Percy has replied

  
cavediver
Member (Idle past 3643 days)
Posts: 4129
From: UK
Joined: 06-16-2005


Message 18 of 21 (388726)
03-07-2007 12:51 PM
Reply to: Message 17 by Percy
03-07-2007 12:48 PM


Sorry, been busy......
Highlight for 1 to 9

7 + 2 - 1 = 8
7 + 2 / 2 = 8
7 - 2 + 3 = 8
2 ^ (7 - 4) = 8
2 * .5 + 7 = 8
7 x 2 - 6 = 8
7 / .7 - 2 = 8
7.8 + .2 = 8
(7 + 9) / 2 = 8
Edited by cavediver, : No reason given.

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Modulous
Member
Posts: 7801
From: Manchester, UK
Joined: 05-01-2005


Message 19 of 21 (388728)
03-07-2007 12:54 PM
Reply to: Message 17 by Percy
03-07-2007 12:48 PM


Re: Progress so far...
I meant that it is only 7 I am stumped on, you should see that 5 is already done. 7 has taken the lion's share of my time thinking about this - I'm going to have to go away and let my subconscious do a bit of work....

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 Message 17 by Percy, posted 03-07-2007 12:48 PM Percy has replied

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Zawi
Member (Idle past 3630 days)
Posts: 126
From: UK
Joined: 12-02-2004


Message 20 of 21 (388729)
03-07-2007 12:56 PM
Reply to: Message 18 by cavediver
03-07-2007 12:51 PM


Re: Sorry, been busy......
Good solution for 7! Much more elegant than I thought it would be...

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Percy
Member
Posts: 22392
From: New Hampshire
Joined: 12-23-2000
Member Rating: 5.3


Message 21 of 21 (388732)
03-07-2007 1:08 PM
Reply to: Message 19 by Modulous
03-07-2007 12:54 PM


Re: Progress so far...
Yeah, I figured that out a few minutes later and edited my post.
--Percy

This message is a reply to:
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