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There are n people standing on line L. What is the value of n?
(1) If 1 more person was standing on line L, the number of different ways to arrange the people standing on line L would be 5,040.
(2) If 2 fewer people were standing on line L, the number of ways to arrange the people standing on line L would be 24.
(1) If 1 more person was standing on line L, the number of different ways to arrange the people standing on line L would be 5,040.
(2) If 2 fewer people were standing on line L, the number of ways to arrange the people standing on line L would be 24.
20 Jan 2015, 09:08
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Bunuel
There are n people standing on line L. What is the value of n?
(1) If 1 more person was standing on line L, the number of different ways to arrange the people standing on line L would be 5,040.
(2) If 2 fewer people were standing on line L, the number of ways to arrange the people standing on line L would be 24.
Kudos for a correct solution.
(1) If 1 more person was standing on line L, the number of different ways to arrange the people standing on line L would be 5,040.
(2) If 2 fewer people were standing on line L, the number of ways to arrange the people standing on line L would be 24.
Kudos for a correct solution.
the number of ways to arrange n people in a line is n!.
statement 1: (n+1)!=5040 we can figure out n --> Sufficient.
statement 2: (n-2)!=24 we can figure out n, which is 4! thus n+1 = 7 and n = 6. Sufficient.
Answer is D
20 Jan 2015, 09:17
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Statement A - 7! will give you value of 5040....No other value possible so our number is (7-1) = 6.....
Statement B - 4! Will give 24 value so. x = 4+2 = 6..
Answer - D....Can be solved by both statements
Statement B - 4! Will give 24 value so. x = 4+2 = 6..
Answer - D....Can be solved by both statements
