SOLUTION: A flashlight has 6 batteries. 2 of which are defective. If 2 are selected at random without replacement, find the probability that both are defective?
The probability that none
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-> SOLUTION: A flashlight has 6 batteries. 2 of which are defective. If 2 are selected at random without replacement, find the probability that both are defective?
The probability that none
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Question 74867This question is from textbook
: A flashlight has 6 batteries. 2 of which are defective. If 2 are selected at random without replacement, find the probability that both are defective?
The probability that none are defective are 4 out of 6 and then after i don't know where to go. This question is from textbook
You can put this solution on YOUR website! A flashlight has 6 batteries. 2 of which are defective. If 2 are selected at random without replacement, find the probability that both are defective?
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# of groups of two defective = 2C2=1
# of groups of two anything = 6C2=[6*5]/[1*2]= 15
Prob(2 defective = 1/15
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\Another way to look at it:
Prob of selecting 1st defective = 2/6 = 1/3
Prob of selectivg 2nd defective = 1/5
Prob(2 defective ) = 1/3 * 15 = 1/15
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Cheers,
Stan H.
The probability that none are defective are 4 out of 6 and then after i don't know where to go.\
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