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A Bag Contains 3 Red Balls, 4 Blue Balls and 1 Yellow Ball, All the Balls Being Identical in Shape and Size. If a Ball is Taken Out of the Bag Without Looking into It; Find the Probability that the Ball Is: Neither Yellow Nor Red - ICSE Class 10 - Mathematics

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Question

A bag contains 3 red balls, 4 blue balls and 1 yellow ball, all the balls being identical in shape and size. If a ball is taken out of the bag without looking into it; find the probability that the ball is: 

neither yellow nor red 

Solution

Total number of balls in the bag=3+4+1=8 

Number of possible outcomes=8=n(s) 

Neithher yellow ball nor red ball means a blue ball 

Event of not drawing a yellow or red ball=E=4 

n(E)=4 

Probability of not drawing a yellow or red ball=`(n(E))/(n(S))=4/8=1/2`

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Solution A Bag Contains 3 Red Balls, 4 Blue Balls and 1 Yellow Ball, All the Balls Being Identical in Shape and Size. If a Ball is Taken Out of the Bag Without Looking into It; Find the Probability that the Ball Is: Neither Yellow Nor Red Concept: Type of Event - Complementry.
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