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A certain travel agency organizes sightseeing tours. Each cl
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18 Nov 2019, 10:53
18 Nov 2019, 10:53
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Question Stats:
77% (00:50) correct
22% (00:42) wrong based on 18 sessions
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A certain travel agency organizes sightseeing tours. Each client may select the cities she wishes to visit and the order in which she visits them. If each tour must include exactly 4 cities, and if there are exactly 10 cities available, how many different tours are possible?
A. 24
B. 210
C. 420
D. 2,400
E. 5,040
Kudos for the right answer and solution.
A. 24
B. 210
C. 420
D. 2,400
E. 5,040
Kudos for the right answer and solution.
Re: A certain travel agency organizes sightseeing tours. Each cl
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18 Nov 2019, 21:16
18 Nov 2019, 21:16
Since we have to select and order as well.
there are 4 places.
first place can be filled in 10 ways, next in 9 ways, next in 8 and the last in 7 ways.
or if you wish to apply a formula it becomes
10P4 = 5040
OA - E
If you like my solution, do give kudos!
there are 4 places.
first place can be filled in 10 ways, next in 9 ways, next in 8 and the last in 7 ways.
or if you wish to apply a formula it becomes
10P4 = 5040
OA - E
If you like my solution, do give kudos!
gmatclubot
Re: A certain travel agency organizes sightseeing tours. Each cl [#permalink]
18 Nov 2019, 21:16
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