Logical Reasoning :: Number Series - Discussion

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Explanation:
7^2=49, 7-1=6, 6*2^2=24+1=25
5^2=25, 5-1=4, 4*3^2=36
6^2=36, 6-1=5, 5*4^2=80+1=81
9^2=81, 9-1=8, 8*5^2=200