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CMAT 2021 Solved Question Paper
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© examsnet.com
Question : 5
Total: 100
How many ten-digit numbers can be formed using all the digits of 2435753228 such that odd digits appear only in even places?
2
!
3
!
5
!
(
5
!
)
2
(
5
!
)
2
3
!
(
5
!
)
2
3
!
(
2
!
)
2
Validate
Solution:
We have number : 2435753228
We can write as 222 48 33557
We need to write ten digit numbers such that odd digits appear only in even places.
∴ Number of ways
=
5
!
3
!
×
5
!
2
!
2
!
=
(
5
!
)
2
3
!
(
2
!
)
2
© examsnet.com
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