A1. In the animal garden, rabbits, pigeons, and ducks have a total of 24 heads, 14 wings, and 62 legs. How many ducks are there in the animal garden?
(A) 5
(B) 6
(C) 7
(D) 8
(E) 9
A1. Hares and ducks do not have wings, but parrots have two wings each, so there are 14 : $2=7$ parrots in the zoo. Parrots thus have a total of $7 \cdot 2=14$ legs. Since ducks do not have legs, the hares have a total of $62-14=48$ legs. Each hare has 4 legs, so there are $48: 4=12$ hares in the zoo. Therefore, there are $24-12-7=5$ ducks in the zoo.