Question 263603
A pollster wants to minimize the effect the order of the questions has on a person's response to a survey. How many different surveys are required to cover all possible arrangements if there are 5 questions on the survey?
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ways to pick the 1st question: 5
ways to pick the 2nd question: 4
ways to pick the 3rd-----------3
ways to pick the 2nd-----------2
ways to pick the 1st-----------1
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Total number of arrangements = 5*4*3*2*1 = 120
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Cheers,
Stan H.