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BECE Mathematics 2010 Paper
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© africaexams.com
Question : 19
Total: 40
Eighteen cards are numbered from 11 to 29. If one card is chosen at random, what is the probability that it contains the digit 2?
3
9
7
18
5
9
11
19
Validate
Solution:
Cards
=
{
11
,
1
2
,
13
,
14
,
15
,
16
,
17
,
18
,
19
,
2
0
,
2
1
,
2
2
,
2
3
,
2
4
,
2
5
,
2
6
,
2
7
,
2
8
,
2
9
}
Probability
=
Number of possible selection
Number of samples
Number of samples
=
19
Number of cards which contain the digit
2
=
11
P
(
Contain digit
2
)
=
11
19
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