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Byju's Answer
Standard IX
Mathematics
Natural Numbers
The number of...
Question
The number of ways in which the number
10800
can be resolved as a product of two factors.
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Solution
Let we have a no.
N
which we can factorize as
N
=
α
k
1
1
α
k
3
2
.
.
.
α
k
n
n
Where
α
1
,
α
2
,
.
.
.
,
α
n
are coprime of each other and
k
1
,
k
2
,
.
.
.
,
k
n
are natural numbers
Now, if
N
is not a perfect square then the no. of ways in which it can be resolved as a product of two factors is given as
(
k
1
+
1
)
(
k
2
+
2
)
.
.
.
.
(
k
n
+
1
)
2
Here
N
=
10800
It's prime factorization will be
10800
=
2
4
×
3
3
×
5
2
Hence
N
is not a perfect square
So,
(
4
+
1
)
×
(
3
+
1
)
×
(
2
+
1
)
2
=
30
ways.
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