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Two polygons A and B have number of sides as a and b respectively

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G
Joined: 25 Dec 2018
Posts: 146
Location: India
GMAT 1: 490 Q47 V13
GPA: 2.86
Two polygons A and B have number of sides as a and b respectively  [#permalink]

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New post 17 Jan 2019, 09:29
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  45% (medium)

Question Stats:

62% (01:08) correct 38% (01:37) wrong based on 31 sessions

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Two polygons A and B have number of sides as a and b respectively, what is the value of |a − b|?

I. Sum of interior angles of polygon A is 360 degree greater than that of polygon B.
II. The number of diagonals of polygon A is 18.
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Joined: 07 Dec 2017
Posts: 885
Re: Two polygons A and B have number of sides as a and b respectively  [#permalink]

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New post 17 Jan 2019, 11:17
1
The answer is A.
We can solve this question Logically - no need to actually solve.
A) using the formula for sum of interior angles in a polygon (180(n-2)), we can plug this data in to get the difference between the polygon. Sufficient!
B) this only gives us data on A - but we need to compare it to B! insufficient!
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Re: Two polygons A and B have number of sides as a and b respectively   [#permalink] 17 Jan 2019, 11:17
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Two polygons A and B have number of sides as a and b respectively

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