Question

PAGE NO.

find
the sum of odd number between
120 sind 300​

Answer 1

Answer:

The odd numbers between 120 and 300 are

121, 123, 125...., 299.

It would forms an AP.

A = 121

An = 299

An = A +[ n-1 ] d

Here d = 1

Then 299 = 121 + [ n-1] 1

ie, 299 - 121= [ n-1] 1

178 = n-1

n = 178 + 1

n = 179

Sn = n/2 [ A +L]

S179 = 179/2[ 121+299]

= 179/2 x 420

= 179 x 840

= 1,50,360.

Hope this answer can help you dear...♥