366 days in a leap year                                                         
13 rolls in a bakers dozen                                                      
2 Beetles still alive                                                           
6 Strings on a guitar 4 on a bass guitar                                        
9 heads on the hydra if you're lucky                                            
9 lives that a cat has                                                          
20 questions (animal, mineral, and vegetable)                                   
36 inches in a yard                                                             
4 fingers on a hand (5 with the thumb)                                          
4 seasons: winter, spring, summer, fall                                         
99 bottles of beer on the wall                                                  
666 sign of the beast                                                           
1 horn on a unicorn                                                             
64 squares on a chessboard