- dhanda.arun
- Senior | Next Rank: 100 Posts
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- Joined: Thu Jul 31, 2008 12:30 pm
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I solved this question earlier
but I guess my approach is not the simpliest
https://www.beatthegmat.com/gmat-prep-ds ... html#69027
Generally, regognize isosceles triangles and the summ of their angles
External angles will also help you













