Math, asked by sciencemaths14, 4 months ago

what is the sum of first 20 natural numbers

Answers

Answered by praneethvarma314

4

Answer:

Answer is 210

Step-by-step explanation:

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Answered by sakshidudhabhate

8

Step-by-step explanation:

S20=?

The natural numbers are 1, 2, 3, 4......

a=1

d=2-1=1

We know,

Sn=n/2[2a+(n-1)d]

S20=20/2[2×1+(20-1)1

=10[2+19]

=10[21]

=210

The sum of 20 natural numbers is 210.

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