How many eggs are in a dozen?
How many shoes are in a pair?
How many babies is triplets?
How many legs does a centipede have?
How many years are in a decade?
What is an eighteen-wheeler?
a truck with 18 wheels
How many buns are in a baker's dozen?
How many holes does a full-length golf course have?
At what age does a person become an octogenarian?
Which wedding anniversary is the golden one?