Data Handling Worksheet Page 32
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3833.
Here are two bags.
Each bag has 3 white balls and one black ball in it.
A ball is taken from one of the bags without looking.
What is the probability that it is a black ball?
Give your answer as a fraction.
1 mark
All the balls from both bags are now mixed together in a new bag.
Put a cross (
) on this line to show the probability of taking a black ball from the
new bag.
0
1
1 mark
International School of Madrid
32
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