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प्रश्न
A bag contains six identical black balls. A child withdraws one ball from the bag without looking into it. What is the probability that he takes out a white ball?
उत्तर
Possible number of outcomes = 6 = number of balls in the bag
n(S) = 6
E = event of drawing a white ball = number of white balls in the bag = 0
n(E) = 0
Probability of drawing a white ball = P(S)
= `(n(E))/(n(S))`
= `0/6`
= 0
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संबंधित प्रश्न
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A card is drawn from a well-shuffled pack of 52 playing cards. Find the probability of the event, the card drawn is a red card.
Solution:
Suppose ‘S’ is sample space.
∴ n(S) = 52
Event A: Card drawn is a red card.
∴ Total red cards = `square` hearts + 13 diamonds
∴ n(A) = `square`
∴ p(A) = `square/("n"("s"))` ....formula
∴ p(A) = `26/52`
∴ p(A) = `square`
