Question

Find the sum of first 130 odd natural numbers ?​

Answer 1

Answer:

Address the formula, input parameters & values.

Input parameters & values:

The number series 1, 3, 5, 7, 9, . . . . , 259.

The first term a = 1

The common difference d = 2

Total number of terms n = 130

step 2 apply the input parameter values in the AP formula

Sum = n/2 x (a + Tn)

= 130/2 x (1 + 259)

= (130 x 260)/ 2

= 33800/2

1 + 3 + 5 + 7 + 9 + . . . . + 259 = 16900

Therefore, 16900 is the sum of first 130 odd numbers.

Answer 2

Answer:

Numbers = 130

First = 1

Last = 259

(Numbers/2) x (First + Last)

(130/2) x (1 + 259)

= 16900

OR

130^2 = 16900