Table of Contents [hide]
- 1 What is the probability of getting both white?
- 2 What is the probability of drawing a white balls from a bag containing 3 black balls and 4 white balls?
- 3 What is the probability of getting a black ball?
- 4 How many black and red balls are there in a bag?
- 5 How many ways can 3 balls be drawn at random?
What is the probability of getting both white?
As both the events are independent, the probability of occurrence of both the events is Preq=P1×P2=23×38=14.
What is the probability of drawing a white balls from a bag containing 3 black balls and 4 white balls?
Two balls are drawn one by one at random without replacement. The probability that the second drawn ball is white. Therefore, the probability that the second drawn ball is white = (2/7) + (2/7) = 4/7.
How many balls must be picked to be sure that 4 balls of the same color are picked?
The answer is 13. As the women selects the balls at random without looking at them, there is a possibility that the first 10 balls which she selects are all red.
How many different ways can I choose 5 balls?
possible ways. Obviously if you want also to take into account the order of drawing, you have to multiply by 5! =120.
What is the probability of getting a black ball?
c) a black ball Therefore the probability of getting a black ball is 1/5.
How many black and red balls are there in a bag?
Ex 13.3, 2 A bag contains 4 red and 4 black balls, another bag contains 2 red and 6 black balls. One of the two bags is selected at random and a ball is drawn from the bag which is found to be red.
How many black and white balls in a box?
A box contains 3 white balls, 4 black balls, 5 red balls. – YouTube A box contains 3 white balls, 4 black balls, 5 red balls. If playback doesn’t begin shortly, try restarting your device.
How many white balls are there in an urn?
An urn contains 6 white, 4 red, and 9 black balls. 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.
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