Math

What do the numbers 11, 69, 88, and 96 all have in common?

related riddles

there are a total of 13 cows and ducks.a cow has 4 legs and a duck has 2 legs.there are a total of 38 legs.How many cow legs are there?

A bat and a ball cost $1.10. The bat costs one dollar more than the ball. How much does the ball cost?

What did number 2 say to number 1?