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If regular polygon P has between 50 and 60 possible diagonals, how man

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GreenlightTestPrep
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If regular polygon P has between 50 and 60 possible diagonals, how man [#permalink] New post   17 Aug 2022, 06:52
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If regular polygon P has between 50 and 60 possible diagonals, how many sides does polygon P have?

A. 8
B. 9
C. 10
D. 11
E. 12
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E
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tkorzhan18
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Re: If regular polygon P has between 50 and 60 possible diagonals, how man [#permalink] New post   17 Aug 2022, 11:39
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GreenlightTestPrep
[url][/url]I selected E
I used this formula for # of diagonals--> n(n-3)/2
50<n(n-3)/2<60
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gmatclubot
Re: If regular polygon P has between 50 and 60 possible diagonals, how man [#permalink]
17 Aug 2022, 11:39
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