Math Riddles

A mother and father have six sons and each son has one sister. How many people are in that family?
See the solution

Sheilah is now two-thirds of Sally’s age. In six years, Sheilah will be four-fifths of Sally’s age. In 15 years, Sheilah will be seven-eighths as old as sister Sally. If they are both under the age of ten, how old are they now?
See the solution

What is the four-digit number (no zeros) in which the third digit is the number of “winds,” the first digit is one-half of the third, the second digit is double the third and the last digit is one-half the sum of the first three?
See the solution

Arrange four eights(9) and a one(1) and only one mathematical symbol to make it equal to 100
See the solution

If in a car 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?
See the solution

Mr. Smith has two children. If the older child is a boy, what are the odds that the other child is also a boy?
See the solution

2 men catch 2 fish in 2 minutes. At this rate, how many men could catch 500 fish in 500 minutes?
See the solution

If two’s company and three’s a crowd, what are four and five?
See the solution

Why should you never mention the number 288 in front of anyone?
See the solution

Rob and Mark live in different parts of town but attend the same high school. Mark left for school ten minutes before Jose and they met in the park. Who was closer to school when they met?
See the solution