Question

If the nth term of an app is given as an=5n-3 then sum of first ten term is?
A 225. B 255 C 245 D 270

Answer 1

Answer:

hey mate here is your answer

Step-by-step explanation:

Correct answer is 245

Answer 2

(C) 245Step-by-step explanation:

We know, An=a+(n-1)d ,where d- difference between two terms of an A.P.

Therefore, n=10 ,d=5 and A10=47

Then,S10=245