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BECE Mathematics 2012 Paper
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© africaexams.com
Question : 17
Total: 40
A box contains 30 identical balls of which 16 are white and the rest yellow. If a girl picks a ball at random from the box, what is the probability that it is a yellow ball?
1
16
7
15
8
15
7
8
Validate
Solution:
Probability
=
Number of possible selection
Total sample
Yellow balls
=
30
−
16
=
14
Total sample
=
30
Probability
(
Yellow
)
=
14
30
=
7
15
Note: 2 divides 14,7 times and 30,15 times.
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