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Ajar contains 5 white, 8 red, 2 blue and 3 balls.Find the probability that a ball drawn
at random is red or blue?
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Answer: 5/9
Step-by-step explanation:
Probability that a ball drawn is red / blue:
Probably is always defined as number of favourable outcomes divided by toal number of outcomes.
Favourable outcomes: The ball must be red/ blue
Number of red balls : 8
Number of blue balls : 2
Total favourable outcomes : 8+2 = 10
Total outcomes: The ball can either be white, red, blue or some other colour.
Number of red balls : 5
Number of red balls : 8
Number of blue balls : 2
Number of other colour balls : 3
Total outcomes : 5+8+2+3 = 18
Therefore,
Probability = 10/18 = 5/9
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