THE RIDDLE

• In 1990,a person is 15 years old. In 1995, that same person is 10 years old. How can this be?

THE ANSWER

• the person was born in 2005 B.C. (Before Christ).
• So, now if you calculate he was 5 years old in 2000 B.C, 10 years old in 1995 B.C, and 15 years old in 1990 B.C