Question 48
ProbabilityWhat is the probability that 3 customers waiting in a bank will be served in the sequence of their arrival at the bank.
- A.1/6
- B.1/3
- C.½
- D.2/3
- E.5/6
Show the answer and explanation
Answer: A (1/6)
Explanation
3 customers can be served in 3! = 6 different orders, and only one is the order of arrival, so the probability is 1/6.