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JEE Main Math Class 11 Sequences and Series Part 2 Questions
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© examsnet.com
Question : 13
Total: 100
Let
A
1
,
A
2
,
A
3
,
.
.
.
.
.
.
be an increasing geometric progression of positive real numbers. If
A
1
A
3
A
5
A
7
=
1
1256
and
A
2
+
A
4
=
7
36
, then the value of
A
6
+
A
8
+
A
10
is equal to
[28-Jun-2022-Shift-1]
33
37
43
47
Validate
Solution:
A
1
⋅
A
3
⋅
A
5
⋅
A
7
=
1
1296
(
A
4
)
4
=
1
1296
A
4
=
1
6
A
2
+
A
4
=
7
36
A
2
=
1
36
A
6
=
1
A
8
=
6
A
10
=
36
A
6
+
A
8
+
A
10
=
43
© examsnet.com
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