Taylor129
12.12.2020 •
Mathematics
Multiply. Write your answer as a fraction in simplest form.
5
4x
6
Solved
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Ответ:
Ответ:
S(1) = 1
S(n) = S(n-1) + n
Where S(n) is the sum from 1 till n
And,
S(n-1) is the sum from 1 till n-1