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02 Dec 2016, 06:47
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Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
5%
(low)
Question Stats:
93% (00:39) correct
7%
(01:00)
wrong
based on 128
sessions
History
Date
Time
Result
Not Attempted Yet
A tutor is scheduling his appointments for the day and has 5 students to see: Liz, Jake, Sarah, Ramsey, and Cody. If the tutor sees all his students that day how many different schedules of students are possible?
A. 3125
B. 1554
C. 120
D. 60
E. 15
A. 3125
B. 1554
C. 120
D. 60
E. 15
iamgregmaicher
Joined: 11 Aug 2016
Last visit: 02 Feb 2023
Posts: 6
Own Kudos:
Given Kudos: 14
Location: United States (PA)
Concentration: Finance, General Management
Schools: UNC Kenan-Flagler (II)
GMAT 1: 710 Q48 V40
GPA: 2.42
WE:Other (Mutual Funds and Brokerage)
03 Dec 2016, 10:58
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Is this a permutation problem?
Its unclear to me if this is the correct line or reasoning or if I'm double counting any of the appointments.
I got 120, my reasoning: There are 5 students to choose from for the first appointment, then 4 students to choose from for the second appointment, etc.
5*4*3*2*1 = 120 different ways to schedule appointments.
5*4*3*2*1 = 120 different ways to schedule appointments.
Its unclear to me if this is the correct line or reasoning or if I'm double counting any of the appointments.
19 May 2017, 01:48
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blitheclyde
your understanding is correct and also it just A simple counting method in this we need to arrange all such students so that order does matter here and answer will be 5!
hope its clear
