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19 Oct 2021, 05:45
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A
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
25%
(medium)
Question Stats:
74% (01:31) correct
26%
(02:02)
wrong
based on 256
sessions
History
Date
Time
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Not Attempted Yet
Corporation Z has 2 locations, one in New York and one in Los Angeles. The New York location has 6 executives and the Los Angeles location has 4 executives. If a meeting of 4 executives is to take place, and exactly 2 executives from New York must attend, how many different groups of 4 executives are possible?
A) 90
B) 105
C) 180
D) 210
E) 360
A) 90
B) 105
C) 180
D) 210
E) 360
Updated on: 22 Oct 2021, 23:26
Originally posted by WizakoMani on 20 Oct 2021, 23:51.
Last edited by WizakoMani on 22 Oct 2021, 23:26, edited 1 time in total.
Last edited by WizakoMani on 22 Oct 2021, 23:26, edited 1 time in total.
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A question in Permutation and Combination.
There are 6 executives from New York and 4 executives from Los Angeles.
A meeting of 4 executives, exactly 2 has to be from New york. So, the remaining 2 has to be from Los Angeles.
We have 4 slots to fill. 2 slots from NY and 2 slots from LA.
Two slots from NY can be filled in 6C2 ways = 15
Two slots from LA can be filled in 4C2 ways = 6
Total ways of filling the slots is the product of the number of ways that each slot can be filled.
Total Ways of filling = 15 * 6 = 90 ways
Option (A) is the answer
There are 6 executives from New York and 4 executives from Los Angeles.
A meeting of 4 executives, exactly 2 has to be from New york. So, the remaining 2 has to be from Los Angeles.
We have 4 slots to fill. 2 slots from NY and 2 slots from LA.
Two slots from NY can be filled in 6C2 ways = 15
Two slots from LA can be filled in 4C2 ways = 6
Total ways of filling the slots is the product of the number of ways that each slot can be filled.
Total Ways of filling = 15 * 6 = 90 ways
Option (A) is the answer
22 Oct 2021, 03:34
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Position of choosen persons don't matter. Thats why your answer is incorrect I think.
Posted from my mobile device
Posted from my mobile device
