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Year 9 Probability Quiz 1
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Two coins are tossed. The chance that the coins show both heads uppermost is
1 point
A
B
C
D
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In a class there are 11 boys and 14 girls. The teacher selects one of the class at random to do a message. The chance that a boy is selected is
1 point
A
B
C
D
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The tree diagram below shows the possible outcomes when a coin is tossed three times. Find the probability of the result being 2 heads and 1 tail in any order.
1 point
A
B
C
D
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A box contains seven spark plugs. Three of which are faulty. If one of the plugs is selected at random, what is the chance it is satisfactory?
1 point
A
B
C
D
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One marble is chosen at random from a bag of marbles.Which statement is true if the probability of this marble being red is 1?
1 point
All of the marbles are red.
Only one of the marbles is red.
Exactly half of the marbles are red.
None of the marbles is red.
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Jill throws a die. What is the probability that the face uppermost, shows a number less than 3?
1 point
A
B
C
D
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