Ex 5.2, 2 (ii) (MCQ) - Chapter 5 Class 10 Arithmetic Progressions (Term 2)
Last updated at Aug. 11, 2021 by Teachoo
Transcript
Ex 5.2, 2 (ii) Choose the correct choice in the following and justify 11th term of the A.P. – 3, – 1/2, 2….. is A. 28 B. 22 C. − 38 D. –48 1/2 Given AP –3, (−1)/2 , 2, … We have to find 11th term i.e. n = 11 Also, a = –3 d = (−1)/2 – (–3) = (− 1)/2 + 3 = (−1 + 6)/2 = 5/2 Putting these in formula an = a + (n – 1) d a11 = –3 + (11 – 1) × 5/2 = –3 + 10 × ( 5)/2 = –3 + 5 × 5 = –3 + 25 = –22 So, the answer is (B)
Ex 5.2
Ex 5.2, 1
Ex 5.2, 2 (i) (MCQ)
Ex 5.2, 2 (ii) (MCQ) Important You are here
Ex 5.2, 3 (i)
Ex 5.2, 3 (ii)
Ex 5.2, 3 (iii) Important
Ex 5.2, 3 (iv)
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Ex 5.2, 5 (i)
Ex 5.2, 5 (ii) Important
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Chapter 5 Class 10 Arithmetic Progressions (Term 2)
Serial order wise
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Davneet Singh
Davneet Singh is a graduate from Indian Institute of Technology, Kanpur. He has been teaching from the past 10 years. He provides courses for Maths and Science at Teachoo.