Probability in a Group of Students
Probability in a Group of Students
Secondary 2
A student is selected at random from a group of \(12\) boys and \(y\) girls. The probability of selecting a girl from the group is \(\frac{2}{5}\).
- Find probability of selecting a boy from the group.
- Find value of \(y\).
- How many more girls are needed to join the group so that the probability of selecting a girl from the group will be \(\frac{1}{2}\)?
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Answer:(a) \(\frac35\) (b) \(y=8\) (c) \(4\) more girls
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