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Byju's Answer
Standard VI
Mathematics
Pictogram
If ℚ stand fo...
Question
If
stands for 30, how much does
stand for?
A
6
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B
10
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C
12
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D
26
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Solution
The correct option is
B
10
Here, 6 balls represent 30.
⇒
1 ball will represent
30
6
=
5
.
So, 2 balls will represent 2
×
5 = 10.
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1
Similar questions
Q.
If
f
(
x
)
=
{
x
,
x
∈
Q
1
x
∉
Q
then
f
(
f
(
x
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)
is
Q.
if
∠
B
O
C
=
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°
, then the value of
∠
A
B
O
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Q.
Let
R
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Q
to
Q
defined by
R
=
{
(
a
,
b
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:
a
,
b
∈
Q
and
a
−
b
∈
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}
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Show that:
(
i
)
(
a
,
a
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R
for all
a
∈
Q
(
i
i
)
(
a
,
b
)
∈
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implies that
(
b
,
a
)
∈
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i
i
i
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(
a
,
b
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(
b
,
c
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R
implies that
(
a
,
c
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Q.
Let
R
1
and
R
2
be two relations defined as follows:
R
1
=
{
(
a
,
b
)
∈
R
2
:
a
2
+
b
2
∈
Q
}
and
R
2
=
{
(
a
,
b
)
∈
R
2
:
a
2
+
b
2
∉
Q
}
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Q
is the set of all rational numbers. Then :
Q.
For
a
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Q
−
{
1
,
−
2
}
, the roots of the equation
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a
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2
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2
−
1
=
0
are
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