1.

What is the sum of the first 20 natural number?​

Answer»

ong>Answer:

1+2+3+4+5+6+7+8+9+10

11+12+13+14+15+16+17+18+19+20=210

Step-by-step EXPLANATION:

N(n+1)/2

20(21)/2

10*21

210



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