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JEE Main 29-Jan-2024 Shift 1 Solved Paper
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Section:
Mathematics
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© examsnet.com
Question : 2
Total: 90
In an A.P., the sixth terms
a
6
=
2
. If the
a
1
a
4
a
5
is the greatest, then the common difference of the A.P., is equal to
[29-Jan-2024 Shift 1]
3
2
8
5
2
3
5
8
Validate
Solution:
👈: Video Solution
a
6
=
2
⇒
a
+
5
d
=
2
a
1
a
4
a
5
=
a
(
a
+
3
d
)
(
a
+
4
d
)
=
(
2
−
5
d
)
(
2
−
2
d
)
(
2
−
d
)
f
(
d
)
=
8
−
32
d
+
34
d
2
−
20
d
+
30
d
2
−
10
d
3
f
′
(
d
)
=
−
2
(
5
d
−
8
)
(
3
d
−
2
)
d
=
8
5
© examsnet.com
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