Neco 2019 Mathematics Question 20
Practice objective / multiple choice question 20 from the 2019 Neco Mathematics examination.
A bag contains red, blue and green balls. The number of red balls is twice the number of blue balls, and the number of green balls is 5 less than the number of red balls. Two balls are drawn at random without replacement and it is observed that the two balls are of different colours. What is the probability that one of the drawn balls is red? Give your answer as a fraction in lowest terms.
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About This Question
This is Neco 2019 Mathematics Question 20. It is one of the objective questions from the 2019 Neco Mathematics examination.
Difficulty level: Hard .
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