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JEEMAIN-2014
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Q)
If
p
,
q
,
r
are positive and are in A.P the roots of quadratic equations
p
x
2
+
q
x
+
r
=
0
are all real for
|
r
p
−
7
|
≤
4
√
3
|
p
r
−
7
|
<
4
√
3
a
l
l
p
a
n
d
r
n
o
p
a
n
d
r
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