Question

find the following sums? a.1+2+3+4+5+..................+100​

Answer 1

Answer:

$sumation \: of \: series \: \\ \frac{n}{2} (2a + (n - 1)d) \\ \frac{100}{2} (2 \times 1 + (100 - 1) \times 1) \\ 50(2 + 99) \\ 50 \times 101 \\ 5050$

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Answer 2

❤️Hey mate ❤️

Here is your answer dude