Question

(
ii) -5 + (-8)+(-11) +... + (-230)​

Answer 1

Given :-(-5)+(-8)+(-11)+........+(-230) Here, a1=-5,d=a2-a1=(-8)-(-5)=-8+5=-3,an=(-230) an=a+(n-1)d (-230)=(-5)+(n-1)(-3) =>-230+5=-3n+3 =>-225=-3n+3 =>-3n+3=-225 =>-3n=-225-3 =>-3n=-228 =>3n=228 =>n=228/3 =>n=76 (This is the required answer.) [If you liked my answer then please mark me as brainliest and I will definitely follow you back.]