Question

1+2+3+4+______+97+98+99+10​

Answer 1

Ответ:

Пошаговое объяснение:

49×100+50+100=5050

Answer 2

49×100+50+100=5050

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Answer 3

To find the sum of the numbers from 1 to 99, you can use the formula for the sum of an arithmetic series. The formula is:

Sn = (n/2)(a + l)

where Sn represents the sum of the series, n represents the number of terms, a represents the first term, and l represents the last term.

In this case, the first term (a) is 1, the last term (l) is 99, and the number of terms (n) is (99 - 1) / 1 + 1 = 99.

Plugging the values into the formula:

Sn = (99/2)(1 + 99) = (99/2)(100) = 99 * 50 = 4950

Therefore, the sum of the numbers from 1 to 99 is 4950.