Games
Problems
Go Pro!

Josiah, Martha and Kylie

Pro Problems > Math > Logic > Conditional Statements > Contrapositives

Josiah, Martha and Kylie

Consider the following conditional statements:

If Josiah makes a funny face, and Martha sees it, Martha will laugh.
Martha laughs if and only if she is amused.
If Martha is amused, she pokes Kylie.

If Martha did not poke Kylie, state all the things we can logically conclude.

Presentation mode
Problem by Mr. Twitchell

Solution

In order to make it feasible for teachers to use these problems in their classwork, no solutions are publicly visible, so students cannot simply look up the answers. If you would like to view the solutions to these problems, you must have a Virtual Classroom subscription.
Assign this problem

Similar Problems

Silly Contrapositives

Write the contrapositives of each of the following statements:

• People who sell air conditioners to eskimos are both devious and clever.
• Whenever it rains at night, I don't like to drive.
• If the elections are rigged, the results will be skewed.
• If Stella likes to draw, or Toby likes to paint, then both their mother and father are happy.
• If jackals eat lettuce, and rabbits eat elephants, then either Bob is old or Jane is young.