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programming-examples
/
python
/
Basics
/
Sum of the first n positive...
3 lines
85 B
Python
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n
=
int
(
input
(
"
Input a number:
"
)
)
sum_num
=
(
n
*
(
n
+
1
)
)
/
2
print
(
sum_num
)
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