Probability: Choosing a Student from a Group
Probability: Choosing a Student from a Group
Secondary 2
A student is selected at random from a group of 12 girls and \(x\) boys. The probability of selecting a boy from the group is \(\frac{3}{7}\).
- Find the probability of selecting a girl from the group.
- Find the value of \(x\).
- How many more boys are needed to join the group so that the probability of selecting a boy from the group will be \(\frac{4}{5}\)?
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Answer:(a) \(\frac47\) (b) \(x=9\) (c) \(39\) more boys
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