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Byju's Answer
Standard IX
Mathematics
Sum of n Terms
6C2=
Question
6
C
2
=
_
_
Open in App
Solution
n
C
r
=
n
!
r
!
n
-
r
!
6
C
2
=
6
!
2
!
6
-
2
!
=
6
!
2
!
×
4
!
=
6
×
5
×
4
!
2
×
1
×
4
!
=
6
×
5
2
=
15
Hence,
6
C
2
=
15
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1
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m
C
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