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AP and TS EAMCET Engineering Model Paper 4
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© examsnet.com
Question : 30
Total: 160
The value of
14
C
4
+
4
∑
J
=
1
(
18
−
j
)
C
j
is j = 1
18
C
4
18
C
3
17
C
4
17
C
3
Validate
Solution:
n
C
r
+
r
.
n
C
r
−
1
=
n
+
1
C
r
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