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Byju's Answer
Standard X
Mathematics
Prime Factorisation
Match the fol...
Question
Match the following:
1.Total number of factors of 360
i) 78
2. Sum of all factors of 360
ii) 1092
3.Sum of all odd factors of 360
iii) 24
4.Sum of all even factors of 360
iv) 1170
5.Product of all factors of 360
v)
360
12
A
1-v, 2-i, 3-iv, 4-iii, 5-ii
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B
1-iii, 2-iv, 3-i, 4-ii, 5-v
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C
1-ii, 2-v, 3-i, 4-iii, 5-iv
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D
1-i, 2-iv, 3-iii, 4-ii, 5-v
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Solution
The correct option is
B
1-iii, 2-iv, 3-i, 4-ii, 5-v
We have,
360
=
2
3
×
3
2
×
5
a) Total number of factors
=
(
3
+
1
)
×
(
2
+
1
)
×
(
1
+
1
)
=
4
×
3
×
2
=
24
b) Sum of all factors
=
(
2
0
+
2
1
+
2
2
+
2
3
)
(
3
0
+
3
1
+
3
2
)
(
5
0
+
5
1
)
=
15
×
13
×
6
=
1170
c) Sum of all odd factors
=
(
3
0
+
3
1
+
3
2
)
(
5
0
+
5
1
)
=
13
×
6
=
78
d)Sum of all even factors
= Sum of all factors - sum of all odd factors
= 1170 -78
= 1092
e) Product of all factors
=
360
N
2
, where N is the total number of the factors
=
360
24
2
=
360
12
Suggest Corrections
6
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