Advertisements
Advertisements
प्रश्न
A box contains 7 red balls, 8 green balls and 5 white balls. A ball is drawn at random from the box. Find the probability that the ball is neither red nor white.
उत्तर
Total number of balls in the box = 7 + 8 + 5 = 20 balls
Total possible outcomes = 20 = n(S)
Neither red ball nor white ball = green ball
Event of not drawing a red or white ball = E = number of green ball
n(E) = 8
Probability of drawing a white ball = `(n(E))/(n(S)) = 8/20 = 2/5`
APPEARS IN
संबंधित प्रश्न
A coin is tossed once. Find the probability of not getting a tail.
In a single throw of a dice, find the probability that the number will be an even number.
If two coins are tossed once, what is the probability of getting both heads or both tails.
A bag contains 16 coloured balls. Six are green, 7 are red and 3 are white. A ball is chosen, without looking into the bag. Find the probability that the ball chosen is not white.
A ball is drawn at random from a box containing 12 white, 16 red and 20 green balls. Determine the probability that the ball drawn is red or white.
Thirty identical cards are marked with numbers 1 to 30. If one card is drawn at random, find the probability that it is a multiple of 3 or 5.
In a single throw of two dice, find the probability of a number less than 3 on each dice.
A dice is thrown once. What is the probability of getting a number less than or equal to 2?
From a well-shuffled deck of 52 cards, one card is drawn. Find the probability that the card drawn is a card with number 5 or 6.
A box contains 7 red balls, 8 green balls and 5 white balls. A ball is drawn at random from the box. Find the probability that the ball is white.
