Will the witch make a profit or loss?
A coin is flipped 4 times. What is the probability of getting heads at least 3 times?
6 tiles are placed in a row. What is the probability that no two adjacent tiles have the same letter on them?
There are 10 girls in a mixed class. If two pupils are selected, the probability that they are both girls is 0.15. How many boys are in the class?
These strange dice are rolled. What is the probability that the sum obtained is an odd number?
Two of the triangles in the diagram are shaded black. What is the probability the resulting figure has at least one line of symmetry?
Is a score of 9 more likely than a score of 10 when you roll three dice?
How many different ways can I arrange the CDs in my collection?
In how many different ways can a row of five "on/off" switches be set so that no two adjacent switches are in the "off" position?
If two girls each take a sweet from each other's bags, what is the probability that they end up with what they started with?
The teacher has forgotten which pupil won which medal. In how many different ways could he give the medals out to the pupils?
How many ways can these five faces be ordered?
What percentage of people voted for the Broccoli party in the Vegtown election?
Four cards from a set numbered 1-36 are dealt. What is the probability that they are dealt in order?
How can this prisoner escape?
Which game offers you the best chance of winning?
What percentage of students who graduate have never been to France?
If you take two dominoes from a set at random, what is the probability that they 'match'?