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JEE Main 4 Apr 2024 Shift 1 Solved Paper
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© examsnet.com
Question : 10
Total: 90
The sum of all rational terms in the expansion of
(
2
1
5
+
5
1
3
)
15
is equal to :
[4 Apr 2024 Shift 1]
3133
633
931
6131
Validate
Solution:
👈: Video Solution
T
r
+
1
=
15
C
r
(
5
1
3
)
r
(
2
1
5
)
15
−
r
=
15
C
r
5
r
3
⋅
2
15
−
r
5
R
=
3
λ
,
15
µ
⇒
r
=
0
,
15
2
rational terms
⇒
15
C
0
2
3
+
15
C
15
(
5
)
5
=
8
+
3125
=
3133
© examsnet.com
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