║⊕QUESTION⊕║
Do not worry about your difficulties in Mathematics. I can assure you mine are still greater.
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CLASS 11
PERMUTATIONS AND COMBINATIONS
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In how many ways can a cricket team of 11 players be selected from 16 players:
1) If 2 particular players are always to be included?
2) If 1 particular player is to be excluded?
3) If 2 particular players are to be included and one particular player is to be rejected?
Answers
Hi !
- Solution :-(1)______
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11 player can be selected out of 15 player .
So , 16C11 ways = 16!/11!*5! = 4368 ways of _ .
From Question (1) :- If two particular player always to be included , then se have to select 9 more player from 14
•°• Number of ways of selection is
14!/9!5! = 2002
vhhhhbb
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- Solution :- 2
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if one particular player is to be excluded .
then, number of ways of selection is ,
15C11 = 15!/11!*4!
=> 1365 Ways of selection .
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Solution :- (3)
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If two particular player is to included and one particular player is to be rejected
then , no. of ways of selection is , 13C9
13!/9!*5! = 715ways
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Hope it helps. !
#Rajukumar1111
Answer:
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