Twenty per cent of the inhabitants of a city have been inoculated against a certain disease. An epidemic hits the city and the chance of infection amongst those inoculated is 10% but amongst the rest it is 75%.
Copy and fill in the contingency table and the Venn diagram below and use them to answer […]
Suppose you throw a double one. On the next throw, is your chance of throwing a double one the same, more likely or less […]
GAMES FOR A GROUP OR CLASS OF ANY SIZE
See the Home Learning Guide to find the best game for your group. All the games are played in a similar way but with variations of scoring systems.
PLAY FOR FUN – THINK AND WIN – PLAY AND LEARN
The game can easily be adapted to 2-digit or 3-digit numbers or […]
Najwa and Zuki play a game.
They put two red and four blue ribbons in a box. They pull out two ribbons at the same time without looking at the colours.
Najwa wins if both ribbons are the same colour.
Zuki wins if the two ribbons are different colours.
You could play the […]
For scissors hold out 2 fingers like a pair of scissors.
For paper hold your hand out flat.
For rock clench your hand into a fist.
Count 1 , 2, 3 and then, at the same time, both players make one of the signs: scissors, or paper or […]
Mzo picks one marble from each bag at random.
What is the probability he picks one of each colour? What is the probability he does NOT pick a […]
If Busi has 3 children what is the probability that at least one will be a girl?
Imagine tossing a coin three times.
What’s the probability you will get a head on at least one of the tosses?
Suppose you drew this tree diagram. How would it help you to find the answers to […]
Each lottery ticket has 6 numbers and you win a top prize if your 6 numbers match the 6 numbers chosen that […]
In the Lucky Numbers Game 6 balls are numbered 1 to 6 and 3 balls are chosen at random without replacing any of the balls so that 3 different winning numbers are chosen.
When you play this game you get a ticket with 3 numbers written on it.
You win a prize if […]