A bag contains 4 white and 6 black balls all of the same shape and same size.

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asked Jun 15 in Class VII Maths by muskan15 (-3,403 points)

A bag contains 4 white and 6 black balls,- all of the same shape and same size. A ball is drawn from the bag without looking into the bag. Find the probability that the ball drawn is :
(i) a black ball
(ii) a white ball
(iii) not a black ball

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1 Answer

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answered Jun 15 by aditya23 (-2,178 points)

Number of white balls = 4

Number of black balls = 6

Number of total balls or possible events = 6 + 4 = 10 balls

(i) Probability (a black ball)

Number of black balls = 6

Number of total balls = 10

∴ Probability = 6/10 = 3/5

(ii) P (a white ball)

Number of white balls = 4

Number of total balls = 10

∴ Probability = 4/10 = 2/5

(iii) P (not a black ball)

= number of white balls/Number of total balls = 4/10 = 2/5

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