WebApr 21, 2024 · If pth, qth and rth terms of an A.P are a, b and c respectively, then:- Q10. If a, b, c be in A.P, then ( a − c) 2 ( b 2 − a c) is More Sequences and Series Questions Q1. If n harmonic means are inserted between 1 and r, then 1 s t m e a n n t h m e a n = Q2. The arithmetic mean of 1, 2, 3, 4, …. n numbers will be : Q3. WebIn an A.P, if the p th term is 1/q and q th term is 1/p, prove that the sum of first pq terms is 1/2 (pq + 1), where p ≠ q. Solution: It is known that general term of an A.P is a n = a + (n - 1) d p th term = a n = a + (n - 1) d = 1/q .... (1) q th term = a n = a + (n - 1) d = 1/p .... (2) Subtracting (2) from (1) , we obtain
The p th, q th and r th terms of an A.P are a,b,c respectively
WebAug 20, 2024 · In an A.P. the pth term is q and the (p + q)th term is 0. Then the qth term is (A) – p (B) p (C) p + q (D) p – q sequences and series class-11 1 Answer 0 votes answered Aug 20, 2024 by AbhishekAnand (88.0k points) selected Aug 20, 2024 by Vikash Kumar Best answer (B) is the correct answer WebJul 26, 2024 · Best answer Given: pth term is q and (p + q)th term is 0. To prove: qth term is p. pth term is given by q = a + (p - 1) × d……equation1 (p + q)th term is given by 0 = a + (p + q - 1) × d 0 = a + (p - 1) × d + q × d Using equation1 0 = q + q × d d = - 1 Put in equation1 we get a = q + p - 1 qth term is q + p - 1 + (q - 1) × ( - 1) p Hence proved. ct post breaking news today 2 10 19
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WebMar 29, 2024 · If the pth term of an AP is 1/q and the qth term is 1/p show that the sum of the pm term is 1/2 (pq+1) - 3131802. sami271 ... Secondary School answered • expert verified if the pth term of an AP is 1/q and the qth term is 1/p show that the sum of the pm term is 1/2 (pq+1) See answers Advertisement Advertisement nitthesh7 nitthesh7 Given … WebThe pth term of an A.P. is a and qth term is b. Prove that sum of its (p+q) terms is 2p+q[a+b+ p−qa−b]. Medium Solution Verified by Toppr Let the first term be A and common difference D. S p+1= 2p+q[2A+(p+q−1)D] (1) It is given that T p=a and T q=b ∴{A+(p−1)D=aA+(q−1)D=b} Substracting, (p−q)D=a−b ∴D= p−qa−b (2) Adding, … WebMar 30, 2024 · Transcript. Example 21 If pth, qth, rth and sth terms of an A.P. are in G.P, then show that (p – q), (q – r), (r – s) are also in G.P. We know that the nth term of AP is a + (n – 1)d i.e. an = a + (n – 1)d It is given that ap, aq, ar & as in GP i.e. their common ratio is same So,𝑎_𝑞/𝑎_𝑝 = (ar )/qq = 𝑎𝑠/𝑎𝑟 We need to show (p – q), (q – r), (r – s) are in ... ct porta potty rentals