posted by Daniel .
The sum of the first 10th term of an a.p is 255,the sum of the first 20 term is 1010.find the next 2020 term of the progression
Voncent Moloko Mwale
10/2[2a+(10-1)d=255 20/2[2a+(20-1)d=1010. So a=3, and d=5. Then the 2020 term is 3+(2020-1)5.And the answer is 10098.