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Byju's Answer
Standard XII
Mathematics
Arithmetic Mean
Find the aver...
Question
Find the average of first
40
natural numbers?
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Solution
Sum of first
n
natural numbers
=
n
(
n
+
1
)
2
So,sum of
40
natural numbers
=
(
40
×
41
)
2
=
820
.
∴
the required average
=
820
40
=
20.5
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