Sure, here is a simple Python program that calculates the sum of the series from 1 to n:

```python
def calculate_sum(n):
return n * (n+1) // 2

n = int(input("Enter a number: "))
print("The sum of the series from 1 to", n, "is", calculate_sum(n))
```

This program works by using the formula for the sum of an arithmetic series, which is `n * (n+1) // 2`. The `//` operator is used for integer division in Python, which discards the remainder and only keeps the integer part of the division.

When you run this program, it will prompt you to enter a number. After you enter a number, it will calculate and print the sum of the series from 1 to the number you entered.

Question

Sure, here is a simple Python program that calculates the sum of the series from 1 to n:

```python
def calculate_sum(n):
    return n * (n+1) // 2

n = int(input("Enter a number: "))
print("The sum of the series from 1 to", n, "is", calculate_sum(n))
```

This program works by using the formula for the sum of an arithmetic series, which is `n * (n+1) // 2`. The `//` operator is used for integer division in Python, which discards the remainder and only keeps the integer part of the division.

When you run this program, it will prompt you to enter a number. After you enter a number, it will calculate and print the sum of the series from 1 to the number you entered.

Knowee AI · Accepted Answer

Sure, here is a simple Python program that calculates the sum of the series from 1 to n:

```python
def calculate_sum(n):
    return n * (n+1) // 2

n = int(input("Enter a number: "))
print("The sum of the series from 1 to", n, "is", calculate_sum(n))
```

This program works by using the formula for the sum of an arithmetic series, which is `n * (n+1) // 2`. The `//` operator is used for integer division in Python, which discards the remainder and only keeps the integer part of the division.

When you run this program, it will prompt you to enter a number. After you enter a number, it will calculate and print the sum of the series from 1 to the number you entered.

Write a Python program to calculate the sum of the series: 1 + 2 + 3 + … + n.

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