Four-digit number
What is the four-digit number in which the first digit is one third the second, the third is the sum of the first and second, and the last is three times the second?
Click here for the solution
1349
more riddles
Reflections
The letters on the glass doors of a beauty parlor read correctly when viewed from the street. How would this lettering appear when seen in a mirror in the parlor, which reflects it from a mirror, which reflects it from another mirror?The lettering would appear...
How many balls?
Glenn and Jason each have a collection of cricket balls. Glenn said that if Jason would give him 4 of his balls they would have an equal number; but, if Glenn would give Jason 4 of his balls, Jason would have 3 times as many balls as Glenn.How many balls does Jason...
How can this be?
A certain large animal lives happily and thrives here on Earth. One day, every single one of these critters is wiped out by a mysterious disease which affects only this particular animal. There are none left anywhere on earth -- they are all gone. About a year or so...
How old is Mike?
David and Mike are brothers. David is 33 years old today. This is three times as old as Mike was when David was the age that Mike is today.How old is Mike?Mike is 22 years old.more riddlesDonec rutrum congue leo eget...