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What is the probability that both the balls have the same colour?
A bag contains 5 black balls and 3 white balls. Two balls are drawn at random, one after another from the bag without replacement. What the probability that both of the balls have the same colour? The answer depends on which color is picked two times. Let’s solve for black first. There is a 5 8 chance that a black marble will be chosen.
What is the probability of drawing two white balls in blackjack?
The probability of a white ball in the second pick is 4/7. Total probability of drawing two white balls is 5/8*4/7 (since they are independent events). If you picked a black ball initially, picking another black ball would have a probability of 2/7, on similar grounds , total prob for 2 blacks would be 3/8*2/7.
How many white and 3 black balls are there in a bag?
After the first ball is drawn, there are 5 white and 2 black balls in the bag. ⇒ The probability of drawing a black ball is 2 7. ⇒ The probability that both the ball drawn are black is 3 8 × 2 7 = 3 28. Originally Answered: There are 5 white and 3 black balls in a bag. Two balls are randomly taken out without replacing them.
How do you find the probability of drawing a red ball?
Probability of drawing a first RED ball can be gotten by dividing the number of RED balls in the bag by the total number of balls in the bag. Probability of drawing a second RED ball can be gotten by dividing the number of REMAINING RED balls in the bag by the total number of balls remaining in the bag.
How many total balls are there in the bag?
The bag contains 2 White, 3 Black and 4 Red balls. So, total 9 balls are there in the bag; among them 3 are Black and 6 are non-Black balls. Three balls can randomly be drawn in (9C3) = 84 ways.
How many balls are in a bag of 5 white?
Three balls are drawn from a bag containing 5 white, 4 black and 6 red balls. Find the probability that all the balls are of one colors? – Quora Three balls are drawn from a bag containing 5 white, 4 black and 6 red balls.
What is the total number of balls after each pick?
N/B: The total number of balls decreases after each pick, it went from 12 balls (5 white, 7 black) to 11 balls (4 white, 7 black) to 10 balls (3white, 7black). If we have 10 balls of which four are red, three are white and three are black.