摘要： Counting rectanglesBy counting carefully it can be seen that a rectangular grid measuring 3 by 2 contains eighteen rectangles:Although there exists no... 阅读全文

摘要： Monopoly oddsIn the game,Monopoly, the standard board is set up in the following way:GOA1CC1A2T1R1B1CH1B2B3JAILH2C1T2U1H1C2CH3C3R4R2G3D1CC3CC2G2D2G1D3... 阅读全文