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Josh, of Alameda School, Ampthill, Beds, sends the following answers:
Santa left five puzzles and two books. Because each girl had four sisters and two brothers, and each boy had one brother and five sisters.
The children of Writtle Junior School (Class SA) want to offer the following solution:-We think that Santa would have left 5 puzzles and 2 books based on the following picture:
These show some good thinking. Well done maybe you could try some other activities and send in your solutions.