dhruv
12/7/2016 09:04:12 am
From the last 2 equations on the right side we can see that the upside triangle is 0, because whichever shape is multiplied by the upside triangle results in the upside triangle.
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Munir
12/8/2016 08:56:13 pm
The missing numbers are 7 and 11. Here is my answer.
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