SOLUTION: kristen's financial advisor has given her a list of 8 potential investments and has asked her to select and rank her favorite four. In how many different ways can she do this?
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-> SOLUTION: kristen's financial advisor has given her a list of 8 potential investments and has asked her to select and rank her favorite four. In how many different ways can she do this?
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Question 1163192: kristen's financial advisor has given her a list of 8 potential investments and has asked her to select and rank her favorite four. In how many different ways can she do this? Answer by ikleyn(52781) (Show Source):
For any 8 given items, there are 8! = 8*7*6*5*4*3*2*1 = 40320 ways to order them (permutations).
You can place any of 8 item in the first position.
You can place any of 7 remaining items in the second position.
You can place any of 6 remaining items in the third position.
. . . and so on . . .
Multiplying these options, we obtain the number of permutations.
8 potential investments can be ranked in 8! = 8*7*6*5*4*3*2*1 = 40320 ways.
