Which term of the A.P. 27, 24, 21,…..is zero?

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  1. Class 10
  2. Solutions of Sample Papers for Class 10 Boards

Transcript

Question 5 (Choice - 1) Which term of the A.P. 27, 24, 21,…..is zero? Given AP 27, 24, 21,…. Here, a = 27, d = −3 We need to find which term is 0 ∴ an = 0 a + (n − 1)d = 0 27 + (n − 1)(−3) = 0 27 − 3n + 3 = 0 30 − 3n = 0 3n = 30 n = 30/3 n = 10 ∴ 10th term of AP is 0

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Davneet Singh
Davneet Singh is a graduate from Indian Institute of Technology, Kanpur. He has been teaching from the past 9 years. He provides courses for Maths and Science at Teachoo.