Unknown number of girls in a class

Unknown number of girls in a class

Secondary 2
2 marks
TGM Original Questions

There are 24 boys and \(y\) girls in a class. The probability of selecting a girl is \(\frac{3}{11}\). One student is selected at random. Find

  1. the probability of selecting a boy,[1]
  2. \(y\).[1]

Solution:

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Answer:(a) \(\frac{8}{11}\) (b) \(y=9\).

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