Question

find the following sum using equation

1+2+3+4+5................+20​

Answer 1

Answer:

The infinite series whose terms are the natural numbers 1 + 2 + 3 + 4 + ⋯ is a divergent series. ... The partial sums of the series 1 + 2 + 3 + 4 + 5 + 6 + ⋯ are 1, 3, 6, 10, 15, etc. The nth partial sum is given by a ... Then multiply this equation by 4 and subtract the second equation from the first: c = 1 + 2 + 3 + 4 + 5 + 6 + ⋯ 4 c ...

Answer 2

Answer:

5

Step-by-step explanation:

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