NIMCET 2016 Mathematics PYQ — The number of 5 people groups that can be selected from 9 people … | Mathem Solvex | Mathem Solvex
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NIMCET 2016 — Mathematics PYQ
NIMCET | Mathematics | 2016
The number of 5 people groups that can be selected from 9 people when two particular persons are not to be in the same group is
Choose the correct answer:
A.
126
B.
35
C.
91
(Correct Answer)
D.
252
Correct Answer:
91
Explanation
Calculation: We have to select 5 people group from 9 people such that two particular persons are not selected together, Number of ways = (5 people are selected from 9) - (2 particular people already in the same group)
={}^{9}C_{5}-{}^{7}C_{3}=91
Explanation
Calculation: We have to select 5 people group from 9 people such that two particular persons are not selected together, Number of ways = (5 people are selected from 9) - (2 particular people already in the same group)
