Question

helo friends do it plz fast.... ​

Answer 1

Answer:

Sn=-7384

Step-by-step explanation:

here

1st term=a=-5.

common difference=d=-8-(-5)=-3

last term tn=-203

tn=a+(n-1)d

tn=-203=-5(n-1)(-3)

tn=-203+5=-3n+3

tn=-198-3=-3n

tn=-201=-3n

n=-201/-3

n=67

now sum of AP

Sn=n/2[2a+(n-1)d]

Sn=67/2[2(-5)+(67-1)(-3)]

Sn=67/2(-10-198)

Sn=33.5(-208)

Sn=-7384

hope it will help u have a nice day and plzzzzz mark me as brainliest