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Byju's Answer
Standard IX
Mathematics
Definition of a Set
If P= P:P is ...
Question
If
P
=
{
P
:
P
i
s
l
e
t
t
e
r
i
n
t
h
e
w
o
r
d
"
P
E
R
M
A
N
E
N
T
"
}
. Then n(P) ___.
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Solution
P
=
{
P
:
P
i
s
l
e
t
t
e
r
i
n
t
h
e
w
o
r
d
"
P
E
R
M
A
N
E
N
T
"
}
o
r
P
=
{
p
,
e
,
r
,
m
,
a
,
n
,
t
}
∴
n
(
P
)
=
7
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4
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Q.
If
P
=
{
P
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P
i
s
l
e
t
t
e
r
i
n
t
h
e
w
o
r
d
"
P
E
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"
}
. Then n(P) ___.
Q.
If
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{
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i
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e
t
t
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r
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f
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P
E
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}
. Then n(P)
___
.
Q.
If
P
=
{
x
:
x
i
s
l
e
t
t
e
r
i
n
t
h
e
w
o
r
d
"
P
E
R
M
A
N
E
N
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"
}
, then find n(P).
Q.
If
P
=
{
x
:
x
i
s
a
l
e
t
t
e
r
i
n
t
h
e
w
o
r
d
"
P
E
R
M
A
N
E
N
T
"
}
, then n(P) is _____________.
Q.
If P = {p : p is a letter in the word of
'PERMANENT'}, find
n
(
P
)
.
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