Question

wha is the formula of mean first 20 natural no.​

Answer 1

Sum of first 20 natural numbers/20

1+2+3+4+5+6+7+8+9+10......+20/20

210/20

10.5

Answer 2

First 20 natural numbers =1,2,3,4,5,6,7,8,9,......18,19,20

Mean=sum of observations /no of observations

=1+2+3+4......+19+20/20

=210/20=10.5