Doubts
Sign in
12thPass logo
New chatPYQ LibraryDoubtsRank report
Sign in to see Recents
Sign in to save progress →
Doubts
Sign in

Sequences and Series question

2008 · Shift 2 · Q38
Guest · try one question or challengeGuest · try one question or challenge
  1. PYQ Library
  2. /JEE Advanced
  3. /Mathematics
  4. /Sequences and Series
  5. /2008 · Shift 2 · Q38

Sequences and Series question

2008 · Shift 2 · Q38

JEE AdvancedMathematicsSequences and SeriesMCQ+3 / −1
Suppose four distinct positive numbers a1, a2 , a3, a4 {a_1},\,{a_{2\,}},\,{a_3},\,{a_4}\,a1​,a2​,a3​,a4​ are in G.P. Let b1=a1,b2=b1+a2, b3=b2+a3     and   b4=b3+a4{b_1} = {a_1},{b_2} = {b_1} + {a_2},\,{b_3} = {b_2} + {a_{3\,\,}}\,\,\,and\,\,\,{b_4} = {b_3} + {a_4}b1​=a1​,b2​=b1​+a2​,b3​=b2​+a3​andb4​=b3​+a4​. STATEMENT-1: The numbers b1, b2 , b3, b4 {b_1},\,{b_{2\,}},\,{b_3},\,{b_4}\,b1​,b2​,b3​,b4​ are neither in A.P. nor in G.P. and STATEMENT-2 The numbers b1, b2 , b3, b4 {b_1},\,{b_{2\,}},\,{b_3},\,{b_4}\,b1​,b2​,b3​,b4​ are in H.P.
  1. A
    STATEMENT-1 is True, STATEMENT-2 is True; STATEMENT-2 is a correct explanation for STATEMENT-1
  2. B
    STATEMENT-1 is True, STATEMENT-2 is True; STATEMENT-2 is NOT a correct explanation for STATEMENT-1
  3. C
    STATEMENT-1 is True, STATEMENT-2 is False
  4. D
    STATEMENT-1 is False, STATEMENT-2 is True
PreviousNext

More from Sequences and Series

  • Let V r​ denote the sum of the first r terms of an arithmetic progression (A.P.) whose first term is r and the common difference is (2r−1). Let Tr​=Vr+1​−Vr​−2 and Qr​=Tr+1​−Tr​ for r = 1, 2, ...The…2007 · MCQ
  • Let V r​ denote the sum of the first r terms of an arithmetic progression (A.P.) whose first term is r and the common difference is (2r−1). Let Tr​=Vr+1​−Vr​−2 and Qr​=Tr+1​−Tr​ for r = 1, 2, ...T r​…2007 · MCQ
  • Let V r​ denote the sum of the first r terms of an arithmetic progression (A.P.) whose first term is r and the common difference is (2r−1). Let Tr​=Vr+1​−Vr​−2 and Qr​=Tr+1​−Tr​ for r = 1, 2, ...Which…2007 · MCQ
  • Let 75⋯5r7 denote the (r+2) digit number where the first and the last digits are 7 and the remaining r digits are 5 . Consider the sum S=77+757+7557+⋯+75⋯5987. If S=n75⋯5997+m​…2023 · Numerical
  • Let l1​,l2​,…,l100​ be consecutive terms of an arithmetic progression with common difference d1​, and let w1​,w2​,…,w100​ be consecutive terms of another arithmetic progression with common difference d2​…2022 · Numerical
  • Let a1​,a2​,a3​,… be an arithmetic progression with a1​=7 and common difference 8. Let T1​,T2​,T3​,… be such that T1​=3 and Tn+1​−Tn​=an​ for n≥1. Then, which of the following is/are…2022 · Multiple correct
  • For any positive integer n, let Sn : (0, ∞) → R be defined by Sn​(x)=∑olimitsk=1n​cot−1(x1+k(k+1)x2​), where for any x ∈ R, cot−1(x)∈(0,π) and tan−1(x)∈(−2π​,2π​)…2021 · Multiple correct
  • Let m be the minimum possible value of log3​(3y1​+3y2​+3y3​), where y1​,y2​,y3​ are real numbers for which y1​+y2​+y3​= 9. Let M be the maximum possible value of (log3​x1​+log3​x2​+log3​x3​)…2020 · Numerical