Question

Find the sum of natural number from 1 to 40

Answer 1

Answer:

we know that,

The sum of the natural number from 1to 40 is as follows

=n(n+1)/2

=40(40+1)/2

=40(41)/2

=20(41)

=820

Step-by-step explanation:

hope it helps you frnd.....

Answer 2

The sum of natural numbers between 1 to 40 is 820.

Given,

Natural numbers from 1 to 40.

To Find,

The sum of these natural numbers.

Solution,

The natural numbers between 1 to 40 form an A.P as

1, 2, 3,..., 40

where

a = 1

d = 2-1 = 1

n = 40

Now, the formula for calculating the sum of n terms of A.P is

S = n/2(a + aₙ)

where n is the number of terms, a is the first term, and aₙ is the last term.

S = 40/2(1+40)

S = 20(41)

S = 820

Hence, the sum of natural numbers between 1 to 40 is 820.

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