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  1. 1

    Let's investigate : Number patterns by Smoothey, Marion

    Published 2004
  2. 2

    Tigao tuilili de 100 ge siwei youxi (Chinese) = Knotty number problems & other puzzles by Moscovich, Ivan

    Published 2007
  3. 3

    Tigao sikaoli de 100 ge siwei youxi (Chinese) = Sensational shape problems & other puzzles by Moscovich, Ivan

    Published 2007
  4. 4

    Ti gao zhi li de 400 ge si wei you xi (Chinese) = Enhance the intellectual thinking of the 400 games

    Published 2007
  5. 5

    Anytime sudoku : the ultimate mind sport

    Published 2013
  6. 6

    The girl and the birthday problem by Boaz Dr

    Published 2022
  7. 7

    The girl and the princess by Boaz Dr

    Published 2022
  8. 8

    The boy and the Ants by Boaz Dr

    Published 2022