Question

Which term of the A.P 90.87.84 ----------- is zero?​

Answer 1

Answer:

$a + (n - 1)d = 0 \\ 90 + (n - 1) \times ( - 3) = 0 \\ 90 - 3n + 3 = 0 \\ 3n = 93 \\ n = 31$