Find the number of ways to p...
Find the number of ways to place three black pawns on a chessboard.Correct answers: 23
The first user who solved this task is Neelima Subrahmanyam.
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Peter ApianBorn 16 Apr 1495; died 21 Apr 1552 at age 57.German astronomer and geographer, also known as Petrus Apianus, whose major work was Instrumentum sinuum sivi primi mobilis (1534), in which he gave tables of his calculations of sines for every minute, with a decimal division of the radius. |