Which term of the series 84 + 74 + is 0 ?

Let 0 = , 84 = a, 74 = , and d, which is the difference between consecutive terms, be 74 - 84 = -10.

= a + (n-1)d

0 = 84 + (n-1)-10

0 = 84 - 10n + 10

0 = 94 - 10n

10n = 94

n = 9.4

The equation gives us the answer that 0 is the 9.4th term of the equation. But since n is always a natural number for a number in the series, we can say that 0 is not a part of this series.

the correct answer is d