Question

find the sum of natural number 1 to 100

Answer 1

$\frac{n(n - 1)}{2} \\ = \frac{100(100 - 1)}{2} \\ = \frac{100 \times 99}{2} \\ = 50 \times 99 \\ = 4950$

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Answer 2

5050 this is the write answer