

Maths Crash Course - Live lectures + all videos + Real time Doubt solving!
Ex 5.2
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)
Ex 5.2, 3 (v) Important
Ex 5.2, 4
Ex 5.2, 5 (i)
Ex 5.2, 5 (ii) Important
Ex 5.2, 6 Important
Ex 5.2, 7
Ex 5.2, 8
Ex 5.2, 9
Ex 5.2, 10
Ex 5.2, 11
Ex 5.2, 12 Important
Ex 5.2, 13 Important
Ex 5.2, 14 Important
Ex 5.2, 15
Ex 5.2, 16
Ex 5.2, 17 Important
Ex 5.2, 18
Ex 5.2, 19
Ex 5.2, 20 Important
Last updated at Aug. 11, 2021 by Teachoo
Maths Crash Course - Live lectures + all videos + Real time Doubt solving!
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)