Mathematics 2004 Jamb Examination

Mathematics 2004 Jamb Examination
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Question 51

A container has 30 gold medals, 22 silver medals and 18 bronze medals. If one medal is selected at random from the container, what is the probability that it is not a gold medal?

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Total medals = 30 + 22 + 18 = 70
Number of non-gold medals = 22 + 18 = 40\[ P(\text{not gold}) = \dfrac{40}{70} = \dfrac{4}{7}\]  

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Mathematics 2004 Jamb Examination
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