Question 5 (Choice - 1) - CBSE Class 10 Sample Paper for 2021 Boards - Maths Standard - Solutions of Sample Papers for Class 10 Boards

Last updated at April 16, 2024 by Teachoo

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

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

Question 5 (Choice - 1) - CBSE Class 10 Sample Paper for 2021 Boards - Maths Standard - Part 2

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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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