A person has n keys, one of which will open her door. a) If they try the keys at random, discarding those that do not work, what is the probability that they will open the door on the 3rd attempt? b) What is the probability that they will open the door on the 3rd attempt if they do not discard previously

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A: Provided information is , In a village pub, there are only 9 bottles of beer left, 2 of which have…

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A: The faculty of the mathematics department at Joliet JuniorCollege is composed of 4 females and 9…

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Q: John has four bottles: cola, root beer, ginger, orange drinks. He chooses three of these for a…

A: Let, C=cola R=root beet O=orange    Sample set={CR, RC, CO, OC, RO, OR}  n(S)=6

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Q: What is the probability that a student chosen randomly from the class does not have an A?

A: The given information can be described as   Male Female Total A 3 12 15 Not A 2 4 6   5 16…

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A: Let's denote the following:B1: Event that the marble drawn is blue from box IB2: Event that the…

Q: A hat contains 25 Red slips of paper and 29 Yellow slips of paper (and nothing else). Two slips are…

A: According to the provided information,  Red slips of paper = 25 Yellow slips of paper = 29 Total…

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Q: Suppose you shuffle a standard deck of cards (with 52 cards), and then divide it into 2 stacks. Then…

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A: Probability

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Q: For any two events A and B and P(B) + 1, find weather the following statement is true or not: 1- Р…

A: Introduction :-  We have to check whether given statement is true or false. Formulae :-

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Q: Dolly is randomly selecting a new duo of alpaca to pull her wagon.  There are 5 black alpaca, 7 tan…

A: Probability of an event = Number of event divided by total possible outcomes = n/s

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Q: 1. A family has 3 children: boys and girls are equally likely offspring. What is the probability of…

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Q: In Alex's drawer she has 11 pairs of socks, 4 of which are white, and 15 tee shirts, 2 of which are…

A: Given, Alex's has 11 pairs of socks, 4 of which are white. Alex's has 15 tee shirts, 2 of which are…

Q: find the probability that only three have traveled to Italy.

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