## Mathematical puzzles, for beginners and enthusiastsGeoffrey Mott-Smith has set up 188 problems, ranging from easy to difficult--puzzles in mental arithmetic, puzzles based on logic, puzzles requiring simple algebra, and puzzles based on plane figures, the properties of digits and integers, decimation, permutations and combinations, and probability. |

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algebra answer arranged Battle of Hastings Black cards CD CD CD chess circle Club coins color column combinations count COWS AND CHICKENS cube decimation deck diagonal dice digital root dissection distance divisible draw E. F. Bleiler equal equation factors feet figures five formula four Game of Logic Geoffrey Mott-Smith give given integer hand illustrations inches integer intersection ladder Lewis Carroll Martin Gardner mathematical miles per hour move multiple Nought number of permutations Numerian odds opponent pair Paperbound partitions Pascal's triangle pattern pennies pentagon permutations pieces pile play player possible prime probability problem puzzle ratio reach reader rectangle right triangle salvo schedule shown side Smith solution solved spider square root sub-group subtraction tangrams tion Tit-Tat-Toe total number tournament triangular numbers turn values vertex write zero