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.

How many ways can you select the 4 balls of any colour?

The answer is C (4+2–1, 2–1)=C (5,1)=5, where C is the combination function. Assume there are only 6 white balls in the bag. Number of ways to select the 4 balls of any colour (White here) is 6C4. Assume there are only 5 black balls in the bag. Number of ways to select the 4 balls of any colour (black here) is 5C4.

How many black and white balls are in a bag?

A bag contains 5 black balls and 6 white balls. Two balls are chosen at random. What is the probability that the chosen balls are of different colours?

What is the probability that a black marble will be chosen?

There are now 4 black marbles in a bag of 7 marbles, so there is a 4 7 chance that a black marble will be chosen. Let’s now multiply the two fractions together to find our probability: Let’s now solve for white. There is a 3 8 chance that a white marble will be chosen. The marble is chosen and not replaced.

https://www.youtube.com/watch?v=TcB16z4vDEM

How many black balls are there in the bag?

A bag contains 15 white and some black balls. If the probability of drawing a black ball from the bag is thrice that of drawing a white ball, find the number of black balls in the bag. Hence number of black balls is 45. Was this answer helpful? A student is selected at random from the class from blood donation.

How many balls are there in a bag of draw?

A bag contains 2 white balls, 3 black balls and 4 red balls. In how many ways can 3 balls be drawn from the bag, if at least one black ball is to be included in the draw | Permutation and Combination Questions Answers MCQ | Quantitative Aptitude

How many balls can be selected from remaining 12 4?

Rest 1 ball can be selected from remaining ( 12 – 4 ) = 8 balls in 8 C 1. = 42 / 55. A bag contain 2 red balls, 6 yellow balls and 4 green balls. If 3 balls are drawn randomly, then what is the probability that the balls drawn contain no yellow ball?

How many ways can 3 balls be drawn at random?

If 3 balls are drawn at random, what is the probability that 2 of the balls drawn are white, one is each color, none is red, or at least one is white? There are 19 balls of which 6 are white, 4 are black and 9 are black. Number of ways ( N) 3 balls can be drawn is C ( 19, 3) = 969

How many red balls are in a bag of balls?

A bag contains 6 red, 5 white and 4 black balls. If two balls are drawn, what is the probability that none of them are red? Deep learning community forums. Discuss deep learning & machine learning on the Lambda deep learning community forums and chat server. , Math Ph.D. with lots of practical experience in statistics.

How many white and black balls are there in a bag?

A bag contains 10 white and 15 black balls. Two balls are drawn without replacement find the probability that first is black and second is white…… A bag contains 10 white and 15 black balls. Two balls are drawn without replacement find the probability that first is black and second is white……

How many blue balls are there in the bag?

If the probability of drawing a blue ball is double that of a red ball, determine the number of blue balls in the bag. A bag contains 5 red balls and some blue balls. If the probability of drawing a blue ball is double that of a red ball, determine the number of blue balls in the bag. Hence, no. of blue balls in the bag =10.