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Example 8 - Find 11th term from last term: 10, 7, 4, .. -62

Example 8 - Chapter 5 Class 10 Arithmetic Progressions - Part 2

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Example 8 Find the 11th term from the last term (towards the first term) of the AP : 10, 7, 4, ..., – 62. Given AP 10, 7, 4, ………., –62 Now, 11th term from last term of AP 10, 7, 4, …. = 11th term of AP −62, −59, −56, ….7, 10 Thus, our AP is −62, −59, −56, ….7, 10 Here a = −62 d = −59 – (−62) = 3 We need to find 11th term n = 11 Now, an = a + (n – 1) d Putting values an = −62 + (11 – 1) × 3 an = −62 + 10 × 3 an = −62 + 30 an = −32 So the 11th term from the Last is –32

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Davneet Singh has done his B.Tech from Indian Institute of Technology, Kanpur. He has been teaching from the past 12 years. He provides courses for Maths, Science, Social Science, Physics, Chemistry, Computer Science at Teachoo.