Marbles in a bag.
													
																	Combination probability marbles. 
									
	
		
	
																	What are the chances of getting a blue marble. 
																	If we got a red marble before then the chance of a blue marble next is 2 in 4. 
																	How many sets groups of 4 marbles are possible. 
																	Probability examples a jar contains 30 red marbles 12 yellow marbles 8 green marbles and 5 blue marbles what is the probability that you draw and replace marbles 3 times and you get no red marbles. 
															
													
									
	
		
	
																	From 3 green balls we can select 1 green marble in 3c1. 
																	The chance is 2 in 5. 
																	Thus we have 6 56 combinations having at least 2 yellow marbles 330 b from 4 yellow marbles we can select 2 marbles in 4c2 ways 6 ways. 
																	If we randomly select two marbles from the bag what is the probability that the selected marbles are of different colors in other words one white and one red. 
															
													
									
	
		
	
																	I know the number of combination of picking 2 different color marble out of 3 bags is just 3 pick 2 3. 
																	Find the probability of pulling a yellow marble from a bag with 3 yellow 2 red 2 green and 1 blue i m assuming marbles. 
																	So the next time. 
																	Combinations losing your marbles. 
															
													
									
	
		
	
																	There are 55 marbles 25 of which are not red p getting a color other than red p 25 55 455 probability of this happening 3 times in a row is. 
																	A bag of marbles containing 4 white marbles and 6 red marbles. 
																	In part a above we looked at all possible draws from that list we only want the ones that contain only red. 
																	Each marble is labeled with a number so they can be distinguished. 
															
													
									
	
		
	
																	In this video we cover step by step one of the basic types of combination problems. 
																	This would be a combination problem because a draw would be a group of marbles without regard to order it is like grabbing a handful of marbles and looking at them. 
																	A bucket contains the following marbles. 
																	Yellow 1 yellow 2 bag 1 blue 1 blue 2 bag 2 red 1 red 2 bag 3 how many combination are there for picking 2 different color with the label in mind. 
															
													
									
	
		
	
																	If we got a blue marble before then the chance of a blue marble next is 1 in 4. 
																	But what if the marbles are labeled with number like this. 
																	But after taking one out the chances change. 
																	2 blue and 3 red marbles are in a bag. 
															
													
									
	
		
	
																	4 red 3 blue 4 green and 3 yellow making 14 total marbles. 
																	Probability of selecting marbles. 
																	Selecting k objects from n objects is given by. 
																	The probability of picking a yellow marble.