Puzzle activity book of unlock the padlock code for adults , and a very good activity book for adults to develop the spirit of reasoning and analysis , for example : - The 1st digit is the multiplication of the 2nd digit ...........- The 4th digit of the padlock is equal to the 1st digit and the sum of the 4th digit and the 2nd digit is 12 by 3 and also is less than 12 .......... this book is a very good gift for family and friends.
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Seller: WorldofBooks, Goring-By-Sea, WS, United Kingdom
Paperback. Condition: Very Good. The book has been read, but is in excellent condition. Pages are intact and not marred by notes or highlighting. The spine remains undamaged. Seller Inventory # GOR014608606
Quantity: 1 available