$(20^2-18^2)-(19^2-17^2)?$

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M7MBA: Moderator; Posts: 2058; Joined: Sun Oct 29, 2017 4:24 amFollowed by: 5 members; Thanked: 1 times

by M7MBA » Tue Sep 22, 2020 11:57 pm

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$(20^2-18^2)-(19^2-17^2)?$

A. 4
B. 36
C. 38
D. 76
E. 224

Answer: A

Source: Magoosh

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Source: Beat The GMAT — Problem Solving | Tue Sep 22, 2020 11:57 pm

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