BoogieOogie BoogieOogie

09-07-2019
Mathematics

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Someone please help me with this question. I would greatly appreciate it. Please and thank you.

Someone please help me with this question I would greatly appreciate it Please and thank you class=

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konrad509 konrad509

09-07-2019

[tex]\dfrac{15(15-1)}{2}=\dfrac{15\cdot14}{2}=15\cdot7=105[/tex]

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