Probability

To win on a scratch card you have to uncover three numbers that add up to more than fifteen. What is the probability of winning a prize?

Use trigonometry to determine whether solar eclipses on earth can be perfect.

In how many different ways can I colour the five edges of a pentagon so that no two adjacent edges are the same colour?

What is the probability that two pieces of rope are tied together, when Pat ties two loose ends together?

A counter is placed in the bottom right hand corner of a grid. You toss a coin and move the star according to the following rules: ... What is the probability that you end up in the top left-hand corner of the grid?

Charlie thinks that a six comes up less often than the other numbers on the dice. Have a look at the results of the test his class did to see if he was right.

Invent a set of three dice where each one is better than one of the others?

Use cunning to work out a strategy to win this game.

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?

These red, yellow and blue spinners were each spun 45 times in total. Can you work out which numbers are on each spinner?