math algebra online puzzle

6x4 - 24 pieces8x5 - 40 pieces10x6 - 60 pieces11x7 - 77 pieces13x8 - 104 pieces15x9 - 135 pieces16x10 - 160 pieces18x11 - 198 pieces20x12 - 240 pieces21x13 - 273 pieces23x14 - 322 pieces25x15 - 375 pieces26x16 - 416 pieces28x17 - 476 pieces30x18 - 540 pieces Start a new game Create a multiplayer game table

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