triangle puzzle November

MattcAnderson · 2015-11-06, 18:17

Hi Math People

Many of you will find these problems easy.

See Attachment.

Happy puzzling.

Regards

Matt

science_man_88 · 2015-11-06, 18:27

Quote:

Originally Posted by MattcAnderson

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

MattcAnderson · 2015-11-07, 17:54

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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2015-11-07, 17:54	#3
MattcAnderson "Matthew Anderson" Dec 2010 Oregon, USA 2⁵×5² Posts	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