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Byju's Answer
Standard VII
Mathematics
Properties of Integers under Multiplication
Observe the f...
Question
Observe the following pattern:
1
3
= 1
1
3
+ 2
3
= (1 + 2)
2
1
3
+ 2
3
+ 3
3
= (1 + 2 + 3)
2
Write the next three rows and calculate the value of 1
3
+ 2
3
+ 3
3
+ ... + 9
3
+ 10
3
by the above pattern.
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Solution
Extend the pattern as follows:
1
3
=
1
1
3
+
2
3
=
1
+
2
2
1
3
+
2
3
+
3
3
=
1
+
2
+
3
2
1
3
+
2
3
+
3
3
+
4
3
=
1
+
2
+
3
+
4
2
1
3
+
2
3
+
3
3
+
4
3
+
5
3
=
1
+
2
+
3
+
4
+
5
2
1
3
+
2
3
+
3
3
+
4
3
+
5
3
+
6
3
=
1
+
2
+
3
+
4
+
5
+
6
2
Now, from the above pattern, the required value is given by:
1
3
+
2
3
+
3
3
+
4
3
+
5
3
+
6
3
+
7
3
+
8
3
+
9
3
+
10
3
=
1
+
2
+
3
+
4
+
5
+
6
+
7
+
8
+
9
+
10
2
=
55
2
=
3025
Thus, the required value is 3025.
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1
Similar questions
Q.
1
3
+
2
3
+
3
3
+
.
.
.
+
10
3
=
?
Q.
1
3
−
2
3
+
3
3
−
4
3
+
.
.
.
.
+
9
3
=
Q.
11
3
−
10
3
+
9
3
−
8
3
+
7
3
−
6
3
+
5
3
−
2
3
+
1
3
=
Q.
The sum
1
+
1
3
+
2
3
1
+
2
+
1
3
+
2
3
+
3
3
1
+
2
+
3
+
⋅
⋅
⋅
+
1
3
+
2
3
+
3
3
+
⋅
⋅
⋅
+
15
3
1
+
2
+
3
+
⋅
⋅
⋅
+
15
−
1
2
(
1
+
2
+
3
+
⋅
⋅
⋅
+
15
)
is equal to :
Q.
The sum
1
+
1
3
+
2
3
1
+
2
+
1
3
+
2
3
+
3
3
1
+
2
+
3
+
⋅
⋅
⋅
+
1
3
+
2
3
+
3
3
+
⋅
⋅
⋅
+
15
3
1
+
2
+
3
+
⋅
⋅
⋅
+
15
−
1
2
(
1
+
2
+
3
+
⋅
⋅
⋅
+
15
)
is equal to :
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