manhattan test

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manhattan test

by gmatapril » Tue Feb 15, 2011 9:28 am
Six mobsters have arrived at the theater for the premiere of the film "Goodbuddies." One of the mobsters, Frankie, is an informer, and he's afraid that another member of his crew, Joey, is on to him. Frankie, wanting to keep Joey in his sights, insists upon standing behind Joey in line at the concession stand, though not necessarily right behind him. How many ways can the six arrange themselves in line such that Frankie's requirement is satisfied?

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by ankur.agrawal » Tue Feb 15, 2011 10:05 am
https://www.beatthegmat.com/six-mobsters ... 62073.html

The problem has been discussed earlier
gmatapril wrote:Six mobsters have arrived at the theater for the premiere of the film "Goodbuddies." One of the mobsters, Frankie, is an informer, and he's afraid that another member of his crew, Joey, is on to him. Frankie, wanting to keep Joey in his sights, insists upon standing behind Joey in line at the concession stand, though not necessarily right behind him. How many ways can the six arrange themselves in line such that Frankie's requirement is satisfied?

6

24

120

360

720

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Posts: 50
Joined: Fri Jan 28, 2011 1:08 pm

by gmatapril » Tue Feb 15, 2011 11:27 am
thanks
ankur.agrawal wrote:https://www.beatthegmat.com/six-mobsters ... 62073.html

The problem has been discussed earlier
gmatapril wrote:Six mobsters have arrived at the theater for the premiere of the film "Goodbuddies." One of the mobsters, Frankie, is an informer, and he's afraid that another member of his crew, Joey, is on to him. Frankie, wanting to keep Joey in his sights, insists upon standing behind Joey in line at the concession stand, though not necessarily right behind him. How many ways can the six arrange themselves in line such that Frankie's requirement is satisfied?

6

24

120

360

720