If we got a blue marble before then the chance of a blue marble.
													
																	Marbles in a bag probabilitty at least one. 
									
	
		
	
																	What are the chances of getting a blue marble. 
																	So they say the probability i ll just say p for probability. 
																	Marbles in a bag. 
																	2 blue and 3 red marbles are in a bag. 
															
													
									
	
		
	
																	The chance is 2 in 5. 
																	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. 
																	Two marbles are drawn without replacement from a jar containing 4 black and 6 white marbles. 
																	And so this is sometimes the event in question right over here is picking the yellow marble. 
															
													
									
	
		
	
																	In a bag of 512 marbles i have 1 red 1 green 3 purple and 507 white. 
																	The probability of picking a yellow marble. 
																	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. 
																	I know that individually the expected value to pull a red is 512. 
															
													
									
	
		
	
																	So the next time. 
																	A draw the tree diagram for the experiment. 
																	But after taking one out the chances change. 
																	If we got a red marble before then the chance of a blue marble next is 2 in 4. 
															
													
									
	
		
	
																	I am considering a problem where the goal is to calculate the expected number of marbles pulls required to get at least 1 of each rare marble color with replacement. 
																	Given a bag with 2 green marbles 5 red marbles and 3 yellow marbles. 
																	B find probabilities for p bb p br p rb p ww p at least one red p exactly one red 3. 
																	B find the probabilities for p at least one black marble p same color p bw p exactly one black marble.