Math

If you go to the movies and you're paying, is it cheaper to take one friend to the movies twice, or two friends to the movies at the same time?

Two legs I've got, Which never walk on ground; But when I go or run, One leg turns round

If 9+5=2, then what is 5+8?

Raise me none, and I'm unbeaten. Raise me once, I am as well. Raise me thrice, and I am eaten. All said right, but wrongly spelled. Who am I?

Riddles and Answers