Question

(1+2+3+...+9-45)*2020*2021*2022=? пж с решением олимпиада идёт

Answer 1

Ответ:

0

Пошаговое объяснение:

1+2+3...+9-45=0

значит умножение не имеет значение тк 0 умножит на любое число =0

Answer 2

To find the value of the expression (1+2+3+...+9-45) * 2020 * 2021 * 2022, we can break it down into smaller steps.

Step 1: Calculate the sum of the numbers from 1 to 9. The sum of the numbers from 1 to 9 can be found using the formula for the sum of an arithmetic series: Sn = (n/2)(a + l), where Sn is the sum, n is the number of terms, a is the first term, and l is the last term. In this case, n = 9, a = 1, and l = 9. Plugging these values into the formula, we get: S9 = (9/2)(1 + 9) = 45.

Step 2: Calculate the expression (1+2+3+...+9-45). Substituting the value of the sum we found in Step 1, we get: (1+2+3+...+9-45) = 45 - 45 = 0.

Step 3: Calculate the final result. Now we can substitute the value of the expression (1+2+3+...+9-45) into the original expression: (1+2+3+...+9-45) * 2020 * 2021 * 2022 = 0 * 2020 * 2021 * 2022 = 0.

Therefore, the value of the expression (1+2+3+...+9-45) * 2020 * 2021 * 2022 is 0.

Please let me know if you have any further questions!