THEIR ARE 7 GIRLS ON A BUS.EACH GIRL HAS 7 BACKPACKS.IN EACH BACKPACK THEIR ARE 7 BIG CATS,FOR EVERY BIG CAT THEIR IS 7 LITTLE CATS.THE BUS DRIVER IS NOT ON THE BUS AT THE TIME.QUESTION HOW MANY LEGS ARE THEIR ON THE BUS...AND ITS NOT A TRICK SO DONT SAY A BUS HAS NO LEGS..