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Byju's Answer
Standard XII
Mathematics
Combination with Restrictions
In how many w...
Question
In how many ways can
9
different books be distributed among three students if each receives at least
2
books.
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Solution
Possible arrangements so that each student gets at least 2 books are
2
,
2
,
5
=
(
9
C
2
9
C
2
9
C
5
)
3
!
2
,
3
,
4
=
(
9
C
2
9
C
3
9
C
4
)
3
!
3
,
3
,
3
,
=
(
9
C
3
9
C
3
9
C
3
)
3
!
Total ways
=
22176
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