Question

find the sum of all odd natural numbers from 1 to 100​

Answer 1

Answer:

I think it's the  answer 5464

Answer 2

Answer:

3 , 5, 7......................97 , 99

here is your answer:

a = 1

d = 2

an = 99

99 = 1 +( n - 1 ) 2

98 = (n -1 ) 2

(n- 1 ) = 49

n = 50

so... there are 50 terms

S 50 = 50/2 (2 + 98 )

S 50 = 25 (100)

so... sum of 50 terms is 2500 ..

HOPE IT HELPS YOU !!!