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How many ways are there to pick 2 squares of different colors?

+2 votes
121 views

How many ways are there to pick 2 squares of different colors?

two squares

posted Mar 28, 2015 by anonymous

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1 Solution

+1 vote

[(7*9)+(5*11)+(3*13)+(1*15)] / 2

[63+55+39+15] / 2

172 / 2

86

The answer is 86.

solution Mar 29, 2015 by Sreejith Pottathil
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