Waec Model Questions Vol1 2020 Mathematics Question 1
Practice objective / multiple choice question 1 from the 2020 Waec Model Questions Vol1 Mathematics examination.
A bag contains red, blue and green balls. The probability that a ball drawn at random is red is 1/3. If it is known that the first ball drawn is red, the probability that the second ball drawn (without replacement) is blue is 2/7. The bag originally contains a total of 36 balls. How many green balls are in the bag?
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About This Question
This is Waec Model Questions Vol1 2020 Mathematics Question 1. It is a objective / multiple choice question from the 2020 Waec Model Questions Vol1 Mathematics examination.
Difficulty level: Hard .
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