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Roll These Dice

Roll two red dice and a green dice. Add the two numbers on the red dice and take away the number on the green. What are all the different possibilities that could come up?

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Coin Tossing Games

You and I play a game involving successive throws of a fair coin. Suppose I pick HH and you pick TH. The coin is thrown repeatedly until we see either two heads in a row (I win) or a tail followed by a head (you win). What is the probability that you win?

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Win or Lose?

A gambler bets half the money in his pocket on the toss of a coin, winning an equal amount for a head and losing his money if the result is a tail. After 2n plays he has won exactly n times. Has he more money than he started with?

Dice & Spinners Interactive

Here you can simulate throwing a dice and spinning a spinner.

To throw a dice, click on 'Dice' then click 'Play'.
You can have more than one dice by clicking 'Dice' again.

To use a spinner, first choose how many numbers it will have by clicking on the + and - signs.
Then click on the spinner to select it.
Again, you can have more than one spinner.
Click 'Play' to spin the spinner/s.

Once you have selected a spinner, you can edit the numbers, for example you may want to include a zero. Click 'Edit' and enter your chosen numbers in the boxes.

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