My Math Forum "Fill in the blank space" in the square

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October 11th, 2012, 02:21 AM   #1
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"Fill in the blank space" in the square

Can someone please help me with these two IQ questions. I am not sure about the first row so I have given you two different first rows.[attachment=1:3vl3hl4b]H.jpg[/attachment:3vl3hl4b][attachment=0:3vl3hl4b]2.jpg[/attachment:3vl3hl4b]

Thank you!
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 H.jpg (3.6 KB, 190 views) 2.jpg (3.6 KB, 190 views)

 October 11th, 2012, 05:13 AM #2 Global Moderator     Joined: Nov 2006 From: UTC -5 Posts: 16,046 Thanks: 937 Math Focus: Number theory, computational mathematics, combinatorics, FOM, symbolic logic, TCS, algorithms Re: "Fill in the blank space" in the square Of course there are infinitely many solutions... For the first one, the most natural to me is to assume that each sequence going down is geometric, yielding 48^2/8 and 1^2/1. For the second, perhaps the second difference is the constant 1, yielding 48 + (48 - + 1 and 1 + (1 - 1) + 1.
 October 11th, 2012, 07:47 AM #3 Math Team   Joined: Sep 2007 Posts: 2,409 Thanks: 6 Re: "Fill in the blank space" in the square I would have said that, in the first column, each number is 2 times the previous number. 48 is 6 times 8 so I would multiply by 6: 288. In the third column the obvious answer is "1"
October 11th, 2012, 10:40 AM   #4
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Re: "Fill in the blank space" in the square

Quote:
 Originally Posted by HallsofIvy I would have said that, in the first column, each number is 2 times the previous number. 48 is 6 times 8 so I would multiply by 6: 288. In the third column the obvious answer is "1"
Good, that matches my solution for that square.

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