Question

How many terms must but added in the A.P 4,9,14,19....... To obtain 837?

Answer 1

Answer:

wrong question bro

Step-by-step explanation:

Answer 2

Answer:

18

Step-by-step explanation:

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

= n(2(4)+(-1)5)=837×2

= 8n+5n^2-5n=1674

=5n^2+3n-1674=0. Quadratic equation

=18