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Mcdonald Fernandez

11/28/2020 · Senior High School

g. A ball is drawn from a box containing \(4\) red balls, \(7\) green balls and \(8\) blue balls. Find the probability that the ball drawn is 

i) red                     iii) blue 

ii) red or green      iv) not blue 

Determine whether events "drawing a red ball" and "drawing a blue ball" are mutually exclusive? 

Answer
expertExpert-Verified Answer

Lewis Allan
Supertutor
4.0 (17votes)

i) \(P= \frac { 4} { 4+ 7+ 8} = \frac { 4} { 19} \)

ii) \(P= \frac { 8} { 4+ 7+ 8} = \frac { 8} { 19} \)

iii) \(P= \frac { 4+ 7} { 4+ 7+ 8} = \frac { 11} { 19} \)

iv) \(P= 1- \frac { 8} { 4+ 7+ 8} = \frac { 11} { 19} \)

A={drawing a red ball}

B={drawing a blue ball}

\(A\cap B= \emptyset \)

So, they are mutually exclusive

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