Step-by-step explanation:
1+2+3+4+5+6+7+8+9+1+2+3+4+5+6+7+8+9 times 0
2(1+2+3+4+5+6+7+8+9)times 0
Here n = 9
Sum of n natural numbers is given as:
[tex]2 \times \frac{n(n + 1)}{2} \times 0 \\ \\ = 2 \times \frac{9 \times 10}{2} \\ \\ = 9 \times 10 \times 0 \\ \\ = 90 \times 0 \\ \\ = 0[/tex]
