Calculate this~!

MUST be solved in your head!

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155 Replies - 13354 Views - Last Post: 04 May 2009 - 08:17 PM

#36 rdsrds2120   User is offline

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Re: Calculate this~!

Posted 23 December 2008 - 01:45 PM

ooohhh....sooo close

#37 GWatt   User is offline

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Re: Calculate this~!

Posted 23 December 2008 - 01:51 PM

364

#38 rdsrds2120   User is offline

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Re: Calculate this~!

Posted 23 December 2008 - 01:52 PM

YUP! Go head and post our own now.

#39 KYA   User is offline

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Re: Calculate this~!

Posted 23 December 2008 - 01:52 PM

364

DAMMIT IM A MINUTE OFF

This post has been edited by KYA: 23 December 2008 - 01:53 PM


#40 rdsrds2120   User is offline

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Re: Calculate this~!

Posted 23 December 2008 - 02:02 PM

If no one posts another one in 10 mins, I will just to keep it going.

#41 GWatt   User is offline

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Re: Calculate this~!

Posted 23 December 2008 - 02:08 PM

I was going to post a related rates problem, but i forgot most of my calculus, so nvm that.

what is the 6th number of the 9th row of a pascal's triangle?

#42 rdsrds2120   User is offline

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Re: Calculate this~!

Posted 23 December 2008 - 02:13 PM

These are easy~ 56
Well, as long as Iunderstood the question right anyway, haha.

This post has been edited by rdsrds2120: 23 December 2008 - 02:14 PM


#43 GWatt   User is offline

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Re: Calculate this~!

Posted 23 December 2008 - 02:14 PM

ye

#44 rdsrds2120   User is offline

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Re: Calculate this~!

Posted 23 December 2008 - 02:15 PM

Attached Image

~~How many total aquares of ANY SIZE are on this chessboard that DO NOT contain a rook?

#45 tody4me   User is offline

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Re: Calculate this~!

Posted 23 December 2008 - 03:00 PM

62

This post has been edited by tody4me: 23 December 2008 - 03:00 PM


#46 rdsrds2120   User is offline

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Re: Calculate this~!

Posted 23 December 2008 - 03:15 PM

Nice try, but the squares are ANY SIZE

~~ANY SIZE squares~~

#47 tody4me   User is offline

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Re: Calculate this~!

Posted 23 December 2008 - 03:20 PM

Yes, but the size of the square does not affect the number of squares.

This post has been edited by tody4me: 23 December 2008 - 03:20 PM


#48 gabehabe   User is offline

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Re: Calculate this~!

Posted 23 December 2008 - 03:26 PM

I lost count, but I think it's about 115?

#49 GWatt   User is offline

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Re: Calculate this~!

Posted 23 December 2008 - 03:40 PM

Quote

Yes, but the size of the square does not affect the number of squares.


It does if some squares are made up of smaller squares.

This post has been edited by GWatt: 23 December 2008 - 03:41 PM


#50 Gloin   User is offline

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Re: Calculate this~!

Posted 23 December 2008 - 05:21 PM

I got it to 126 but I might have missed one. So if I'm wrong, I would recommend that someone guesses 127.

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