Question

find the average of forst 40 natural numbers?​

Answer 1

Answer:

the average of first 40 natural numbers= 41/2 = 20.5

Step-by-step explanation:

A.P: 1,2,3....40

here, a= 1; an= 40; d= 1; n=40

Sn= n/2(a + an)

Sn= 20(1+40)

Sn= 20 + 800

Sn= 820

Therefore, average of 40 natural numbers= Sn/40

=> 820/40

=> 41/2

Answer 2

Answer:

20.5

Step-by-step explanation:

1+2+3+4+5+6+7+8+9............+40/40

a=1 , n=40 An=40

Sn= n/2(a+An)

Sum of first 40 neutral number is 820.

Average=820/40

=20.5

I hope you understood.