Dean Sam and Castiel are three brothers. Interestingly their current age is prime. What's more interesting that difference between their ages is also prime. How old are they?
Answer: Sam: 2; Dean: 5; Castiel: 7. Age diff 7 - 2 = '5' is prime; 7 - 5 = '2' is prime; 5 - 2 = '3' is prime.
Joe has ten coins totaling $1.19. From these coins, he cannot make exact change for a dollar, half-dollar, quarter, dime, or nickel.
What are the coins?
What do mathematics teachers like to eat?See answer
Select a pack of riddles and try to solve it in an interesting way.
This riddle appears in the following downloadable PDF files: