Question

Find the sum of all odd nos between 25 and 75

Answer 1

Hello mate,

Here is your answer,

25 + 27 + 29 ...... + 75 =?

This is what we have to find

We know sum of the first 'n' odd numbers is (n^2) where 'n' is the no. of numbers in the given question.

=> 75 - 25 / 2

=> 25 numbers

Now using formula,

n^2 = (25)^2

= 625

Hope it helps:)

Answer 2

Please check the image for the solution! Answer is 1300