Question

229. Find the sum of first 10 terms of the AP 2, 7, 12,​

Answer 1

Answer:

245

Step-by-step explanation:

( I hope it will help you )

Answer 2

Answer :

first term a=2, common difference d=5 and n=10.

Now,

S 10 = 10/2 [2a+(10−1)d]

=5[2×2+9×5]

=245