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AP EAMCET Engineering 22 Sep 2020 Shift 1 Paper
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© examsnet.com
Question : 10
Total: 160
Five different books are to be distributed among four students randomly. The probability that each child get atleast one book is
21
64
15
64
31
64
51
64
Validate
Solution:
Total number of ways to distribute five different books among four students randomly is
4
5
=
2
10
=
1024
and number of ways to distribute five different book among four students such that
5
!
1
!
1
!
1
!
2
!
3
!
×
4
!
=
240
So, required probability is
240
1024
=
2
4
×
3
×
5
2
10
=
15
64
© examsnet.com
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