Question

what is the sum of 1+3+5+7....95times​

Answer 1

Answer:

The series is 1–3+5-7+..n. The successive sums are for the nth terms are : at 1st term is 1, at 2nd term is -2, at 3rd term is 3, at 4th is -4… The sum at the nth term is therefore (-1)^(n-1)*n.

Answer 2

Answer:

9025

Step-by-step explanation:

Formula of Sum is:    $\frac{n}{2} ( 2a+ (n-1)d)$

As n=95   a=1    d=3-1=2

Hence we get,

95/2 ( 2*1 + (95-1)2)

95/2 (2 +  188)

95/2 ( 190 )

95 * 95

9025