Neco Model Questions Vol1 2021 Mathematics Question 31
Practice objective / multiple choice question 31 from the 2021 Neco Model Questions Vol1 Mathematics examination.
A box contains red, blue and green balls. The probability that a ball drawn at random is red is \( \frac12 \). If a red ball is drawn first, the probability that a blue ball is drawn on the second draw (without replacement) is \( \frac25 \). If a blue ball is drawn first, the probability that a green ball is drawn on the second draw (without replacement) is \( \frac13 \). The total number of balls is less than 15. Find the probability that a green ball is drawn on the third draw given that the first two draws were red then blue.
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About This Question
This is Neco Model Questions Vol1 2021 Mathematics Question 31. It is one of the objective questions from the 2021 Neco Model Questions Vol1 Mathematics examination.
Difficulty level: Hard .
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