Question

without adding find the sum
1+ 3 + 5 + 7 + ................. +97 +99.​

Answer 1

Answer:

2500

Step-by-step explanation:

using the formula n^2

n means the no of terms

to find n we use Tn=a+(n-1)d

Tn=99,a=1,d=2

by this u get n=50

by substituting we in n^2 we get 2500

Answer 2

Step-by-step explanation:

answer =2500

see the image. it will help u