Rajasthan Board RBSE Class 11 Maths Chapter 8 Sequence, Progression, and Series Ex 8.5 Question 1. Find the sum of n terms of following series: Solution: Let sum of this series is Sn Hence,arithmetic geometric series (ii) 1 + 3x + 5×2 + 7×3 + … In the given series 1, 3, 5, 7, … are … Read more
Rajasthan Board RBSE Class 11 Maths Chapter 8 Sequence, Progression, and Series Ex 8.4 Question 1. Find the sum of the following geometric progression : Solution: (i) Given progression = 2 + 6 +18 + 51 +…. Question 2. Find the sum of following geometric progression : (i) 2 + 6 + 18 + 54 + … Read more
Rajasthan Board RBSE Class 11 Maths Chapter 8 Sequence, Progression, and Series Ex 8.3 Question 1. (i) Find the 7th term of series 1 + 3 + 9 + 27 + … (ii) Find the 10th term of Solution: (i) Given series = 1 + 3 + 9 + 27 + …. Hedre, a = 1, … Read more
Rajasthan Board RBSE Class 11 Maths Chapter 8 Sequence, Progression, and Series Ex 8.2 Question 1. Find the sum of the following progression : Solution: (i) Given progression 7 + 11 + 15 + 19 + … Here, a = 7, d = 11 – 7 = 4, n = 20 Then Sn = S20 = … Read more
Rajasthan Board RBSE Class 11 Maths Chapter 8 Sequence, Progression, and Series Ex 8.1 Question 1. From the following sequence which are in A.P. ? (i) 2, 6, 11, 17,… (ii) 1, 1.4, 1.8, 2.2,… (iii) -7, -5, -3, -1,.. (iv) 1, 8, 27, 64,… Solution : Given sequence will be in A.P. only if common … Read more
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