You may also like

problem icon

The Lady or the Lions

The King showed the Princess a map of the maze and the Princess was allowed to decide which room she would wait in. She was not allowed to send a copy to her lover who would have to guess which path to follow. Which room should she wait in to give her lover the greatest chance of finding her?

problem icon

Master Minding

Your partner chooses two beads and places them side by side behind a screen. What is the minimum number of guesses you would need to be sure of guessing the two beads and their positions?

problem icon

Two's Company

7 balls are shaken in a container. You win if the two blue balls touch. What is the probability of winning?

Flippin' Discs

Stage: 3 Challenge Level: Challenge Level:1

Try listing the possible outcomes.

A tree diagram may be helpful.

If you are not using the interactivity, you could try using coins and keeping a record of what happens.