SOLUTION: have 120 teams. Given that team rankings (wins) is random, what is the expected probability of one team being ranked in the top 10?

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Question 859521: have 120 teams. Given that team rankings (wins) is random, what is the expected probability of one team being ranked in the top 10?
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
The probability for each team to be in any position is P=1%2F120
The probability of being in the top ten is the same as being in any 10 positions. (1 or 2 or 3 or ... or 8 or 9 or 10)'
P=10%281%2F120%29=1%2F12