Items in a Baker's Dozen
13
Cards in a flush in poker
5
Keys on a standard piano
88
Disciples of Jesus Christ
12
Rings on the Olympic Flag
5
Bones in the Human Body
206
Horsemen of the Apocolypse
4
Final Apollo mission to launch
17
Books in The Chronicles of Narnia series
7
Grand Slam tennis championships
4
Days in February in a Leap Year
29
Playing cards in a standard deck
52
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