30,28,27.......find its first negative term

1.	30,28,27.......find its first negative term
Answer» Here, the given A.P. is\xa030,28,27.......a = 30d = 28 - 30 = -2The general term of A.P. isan\xa0= a + (n - 1)dLet nth term is negative,a + (n - 1)d < 030 + (n - 1)(-2) < 030 - 2n + 2 < 032 < 2n16 < nHence, the 17th term is first negative term.

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