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in how many ways 2 squares can be selected from a normal chessboard such that no two are from same row or column

in how many ways 2 squares can be selected from a normal chessboard such that no two are from same row or column

Grade:12th pass

1 Answers

Riddhish Bhalodia
askIITians Faculty 434 Points
8 years ago
total ways = ^{64}C_2

ways with square in single coloum or row = 64x14

Answer = ^{64}C_2 - 64\times14

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