Math, asked by asifansari43, 1 year ago

the sum of first 20 natural numbers will be

Answers

Answered by Anonymous

6

sum of first 20 natural numbers = 1+2+3+4+5+6+7+8+9+10+11+12+13+14+15+16+17+18+19+20 =210

Answered by rohit2092

1

A1=1. d=1
a10=10
s= 10/2×11
s=55

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