One student chosen from a two-way table
One student chosen from a two-way table
Secondary 4
5 marks
The table shows the \(40\) members of a club. One member is chosen at random. Find the probability that the member is
| Wears glasses | Does not wear glasses | |
|---|---|---|
| Boy | \(6\) | \(16\) |
| Girl | \(9\) | \(9\) |
- a girl,[1]
- a member who wears glasses,[1]
- a boy who does not wear glasses,[1]
- not a girl who wears glasses,[1]
- a teacher.[1]
Solution:
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Answer:(a) \(\frac9{20}\) (b) \(\frac38\) (c) \(\frac25\) (d) \(\frac{31}{40}\) (e) \(0\)
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