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Books
Book of Curious and Interesting Puzzles
This collection by best-selling author David Wells, a Cambridge math scholar and teacher, consists of more than 560 puzzles. Its first half is devoted to puz... »
This collection by best-selling author David Wells, a Cambridge math scholar and teacher, consists of more than 560 puzzles. Its first half is devoted to puz... »
The Penguin Book of Curious and Interesting Numbers
A dictionary of numbers (arranged in order of magnitude) which will expose the fascinating facts about certain numbers and number sequences - very large prim... »
A dictionary of numbers (arranged in order of magnitude) which will expose the fascinating facts about certain numbers and number sequences - very large prim... »
