Directions: Using the digits 1 to 9 at most one time each, place a digit in each box to so that the remainder when dividing the two is 14. Source: Kyle Prince

Directions: Using the digits 1 to 9, find a six number data set that has a Mode of 1, Median of 2 and Mean of 3. Digits can be repeated. Source: Harold Jacobs

Directions: Using the integers -9 to 9 at most one time fill in the boxes to create a right triangle on the coordinate plane. Source: Tracy Conte

Directions: Using the digits 0 to 9 at most one time each, place a digit in each box to make two equivalent ratios where one of the ratios is a unit rate. Source: Scott Houston

Directions: Using the digits 0 to 9 at most one time each, place a digit in each box to create a result with the greatest exponent. Source: Kjersti Oliver

Directions: Using the digits 0 to 9 at most one time each, place a digit in each box to create a circle tangent to the line x+y=5. Source: Linnea Reyes-LaMon

Directions: In triangle ABC, angle ABC is obtuse. Using the digits 1 to 9 at most one time each, place a digit in each box to make angle ACB the smallest possible acute angle. Source: Jay Sydow

Directions: Using the digits 1 to 9 at most one time each, place a digit in each box to create a frequency table that has the mean in the box at the top. Source: Phillip Haislip-Hansberry

Directions: Using the digits 1 to 9 at most one time each, find the dimensions of three rectangular prisms so that their volumes are as close as possible. Note: diagram may not be drawn to scale. Source: Daniel Walker

Directions: Using the digits 1 through 9 at most one time each, place a digit in each box to create an equation such that the solution is the largest integer possible. Source: Kristen Amaral