In A.P. 171, 162, 153, ………. Find first non-positive term.(a) 0(b) -2(c) -6(d) -9I got this question in semester exam.My doubt is from Arithmetic Progression(A.P.) in portion Sequences and Series of Mathematics – Class 11

In A.P. 171, 162, 153, ………. Find first non-positive term.(a) 0(b

1.	In A.P. 171, 162, 153, ………. Find first non-positive term.(a) 0(b) -2(c) -6(d) -9I got this question in semester exam.My doubt is from Arithmetic Progression(A.P.) in portion Sequences and Series of Mathematics – Class 11
Answer» Right OPTION is (a) 0 The explanation: a=171 and d=162-171 = -9. an<=0 =>171+(N-1) (-9) <=0 =>180-9n <=0 =>9n >= 180 => n >= 20 => n=20 for first non-positive TERM. First negative term is 171+(19) (-9) = 171-171 = 0.

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In A.P. 171, 162, 153, ………. Find first non-positive term.(a) 0(b) -2(c) -6(d) -9I got this question in semester exam.My doubt is from Arithmetic Progression(A.P.) in portion Sequences and Series of Mathematics – Class 11

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