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The book of pi - Volume II
The first 1000000 (one million) digits of pi.
Print: $21.63
Download: $12.58
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The book of pi - Volume III
The next 5000000 digits of pi: Digits 1000001 through 6000000, continuing from volume II.
Print: $39.30
Download: $16.75
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600 million digits of pi
This CD contains the first 600 000 000 (600 million) digits of PI (3.14).
Disc: $29.95
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Sudoku master's collection
This book contains 75 very difficult sudoku “number place” puzzles. In case you get stuck, the book also provides you a hint to each puzzle.
Ideal for vacations and holidays, commuter train and long flights.
Print: $13.92
Download: $7.50
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Challenging Gatai-5
Gattai-5 Sudoku (also called Samurai Sudoku) is an exciting and challenging puzzle, evolving from the popular Sudoku (number place) puzzle. The puzzle consists of five Sudoku-grids: One in the centre and the other 4 overlapping each corner grid of the central one. Your numbers must be placed correctly for all the five puzzle squares.
Print: $12.72
Download: $7.50
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