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Byju's Answer
Standard VII
Mathematics
Solving by Inspection Method
The set of va...
Question
The set of values of
x
satisfying the inequalities
(
x
−
1
)
(
x
−
2
)
<
0
and
(
3
x
−
7
)
(
2
x
−
3
)
>
0
is
A
(
1
,
2
)
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B
(
2
,
7
/
3
)
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C
(
1
,
7
/
3
)
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D
(
1
,
3
/
2
)
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Solution
The correct option is
D
(
1
,
3
/
2
)
Given that,
(
x
−
1
)
(
x
−
2
)
<
0
and
(
3
x
−
7
)
(
2
x
−
3
)
>
0
(
3
x
−
7
)
(
2
x
−
3
)
>
0
can be written as
⇒
3
(
x
−
7
3
)
2
(
x
−
3
2
)
>
0
⇒
(
x
−
7
3
)
(
x
−
3
2
)
>
0
So, according to this equation we have,
⇒
x
<
3
2
and
x
>
7
3
Now consider
(
x
−
1
)
(
x
−
2
)
<
0
So, according to this equation we have,
⇒
1
<
x
<
2
Considering these constraints we have
⇒
x
lies in
(
1
,
3
2
)
Suggest Corrections
0
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