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

Answer: The person was born in 2005 B.C. (Before Christ). T

More Math Riddles with answers

More Math Riddles

In a bicycle race, the man who came two places in front of the last man finished one ahead of the man who came fifth. How many contestants were there?
In a lake, there is a patch of lily pads. Every day, the patch doubles in size. If it takes 48 days for the patch to cover the entire lake, how long would it take for the patch to cover half the lake?
In an alien land far away, half of 10 is 6. If the same proportion holds true, then what is 1/6th of 30 in this alien land?
In olden days, the student of logic was given this problem: If half of 5 were 3, what would one-third of 10 be?
In two years I know, I'll be twice as old as five years ago, said Tom. How old is Tom?
It is the offspring of a circle and a rectangle.
It takes the town hall clock 6 seconds to strike 4 o'clock in the afternoon. How long does it take to strike midnight?
It's always above the negatives Yet it's lower than the first prime no matter how you multiply it's the same every time
Janie's friends were chipping in to buy her a wedding shower present. At first, 10 friends chipped in, but 2 of them dropped out. Each of the 8 had to chip in another dollar to bring the amount back up. How much money did they plan to collect?
Jeff has $28.75. He purchased three cookies that cost $1.50 each, five newspapers that each cost $0.50, five flowers for $1.25 each, and used the remainder of the cash on a pair of sunglasses. How much were the sunglasses?
Jenna wrote all the numbers from 300 to 400 on a piece of paper. How many times did she write the digit 3?
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?