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Byju's Answer
Standard IX
Mathematics
Algebraic Identities
Find the sum ...
Question
Find the sum of
1
+
2
+
3......2000
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Solution
Sum of natural numbers is given by
S
=
1
+
2
+
3
+
.
.
.
+
n
=
n
(
n
+
1
)
2
S
=
1
+
2
+
3
+
.
.
.
+
2000
=
2000
(
2000
+
1
)
2
=
1000
×
2001
=
20
,
01
,
000
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0
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A.
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