How many eggs are in a dozen? twelve

How many shoes are in a pair? two

How many babies is triplets? three

How many legs does a centipede have? one hundred

How many years are in a decade? ten

What is an eighteen-wheeler? a truck with 18 wheels

How many buns are in a baker's dozen? thirteen

How many holes does a full-length golf course have? eighteen

At what age does a person become an octogenarian? eighty

Which wedding anniversary is the golden one? the 50th