Question

ПОМОГИТЕ СРОЧНО :( ☹️☹️ Найдите сумму всей чётных чисел от 1 до 200 . Пожалуйста помогите ;(

Answer 1

Всего чётных чисел от 1 до 200 включительно 100 штук
S₁₀₀=(a₁+a₁₀₀)*100/2=(2+200)*100/2=10100

Answer 2

Sum of Even Numbers from 1 to 200

To find the sum of all even numbers from 1 to 200, we can use a simple mathematical formula. The sum of an arithmetic series can be calculated using the formula:

Sum = (n/2) * (first term + last term)

In this case, the first term is 2 (the first even number) and the last term is 200. We need to find the value of 'n', which represents the number of terms in the series.

To find 'n', we can use the formula:

n = (last term - first term) / 2 + 1

Let's calculate the sum step by step:

1. Find the value of 'n': - First term (a) = 2 - Last term (l) = 200 - n = (l - a) / 2 + 1 = (200 - 2) / 2 + 1 = 199 / 2 + 1 = 100

2. Calculate the sum: - Sum = (n/2) * (first term + last term) = (100/2) * (2 + 200) = 50 * 202 = 10,100

Therefore, the sum of all even numbers from 1 to 200 is 10,100.