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Old 2015-11-06, 18:17   #1
MattcAnderson
 
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"Matthew Anderson"
Dec 2010
Oregon, USA

13208 Posts
Red face triangle puzzle November

Hi Math People

Many of you will find these problems easy.

See Attachment.

Happy puzzling.

Regards

Matt
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File Type: pdf Math 15and16Level2.pdf (180.0 KB, 173 views)
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Old 2015-11-06, 18:27   #2
science_man_88
 
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Quote:
Originally Posted by MattcAnderson View Post
Hi Math People

Many of you will find these problems easy.

See Attachment.

Happy puzzling.

Regards

Matt
I didn't do the square one but for the triangles all but one involved no trial and error and the last one is simple once you get : a+b =a+c+2; b=c+2; c+b = 20; so c+b/2 =10; 2/2 = 1 so they can only be 9 an 11 solving for a = 12 is almost trivial
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Old 2015-11-07, 17:54   #3
MattcAnderson
 
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Hi Math People

Regarding the math puzzle above
The boxes with 21 and 15 and 9 and 32 can be solved with addition and subtraction.

That leaves 4 boxes unknown.

They can probably be solved with a system of 4 equations and 4 unknowns.

Regards

Matt
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