Answer :


Red Balls = 3

White Balls = 5

Total number of balls = Red Balls + White Balls

Total number of balls = 3 + 5

Total number of balls = 8

One ball can be chosen in 8 ways

Total number of elementary events = 8

there are 5 black (not red) balls

one can be chosen 1 black (not red) ball can be chosen in 5 ways

i.e., Favourable number of elementary events = 5

Hence, probability that the drawn ball is not red

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A child has a dieRS Aggarwal - Mathematics