6. Three people Ali, Brian and Charlie arrange to meet in a bar on campus. Ali cannot remember whether they agreed to meet in Origins or Mungo's and flips a coin to decide. Brian also flips a coin to decide between Mungo's and K-bar. Charlie flips a coin to decide whether to go to K-bar or not, in the latter case he flips again to decide between Origins and Mungo's. a) Draw one probability tree diagram to represent all the information. Find the probability that: b) Ali and Brian meet c) Brian and Charlie meet d) All 3 meet e) All 3 go to different places f) At least 2 of them meet.
Permutations and Combinations
If there are 5 dishes, they can be relished in any order at a time. In permutation, it should be in a particular order. In combination, the order does not matter. Take 3 letters a, b, and c. The possible ways of pairing any two letters are ab, bc, ac, ba, cb and ca. It is in a particular order. So, this can be called the permutation of a, b, and c. But if the order does not matter then ab is the same as ba. Similarly, bc is the same as cb and ac is the same as ca. Here the list has ab, bc, and ac alone. This can be called the combination of a, b, and c.
Counting Theory
The fundamental counting principle is a rule that is used to count the total number of possible outcomes in a given situation.
Can someone help me with only part e) of the question please? Thanks.
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