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Aptitude Questions: Number Series Set 51

Hello Aspirants. Welcome to Online Quantitative Aptitude Section in AffairsCloud.com. Here we are creating question sample in Number Series, which is common for all the competitive exams. We have included Some questions that are repeatedly asked in bank exams !!!

    1. 12 42 156 606 2400 ?
      A. 9186
      B. 9470
      C. 9570
      D. 9486
      E. None of these
      Answer & Explanation
      Answer – C. 9570
      Explanation :
      (12 * 4) – 6 = 48 – 6 = 42
      (42 * 4) – 12 = 168 – 12 = 156
      (156 * 4) – 18 = 624 – 18 = 606
      (606 * 4) – 24 = 2424 – 24 = 2400
      (2400 * 4) – 54 = 9600 – 30 = 9570

    2. 18 9 11 ? 109 544
      A. 34
      B. 28
      C. 24
      D. 14
      E. None of these
      Answer & Explanation
      Answer – B. 28
      Explanation :
      18*1 – 9 = 9
      9*2 – 7 = 11
      11*3 – 5 = 28

    3. 14 26 62 122 206 ?
      A. 310
      B. 312
      C. 314
      D. 313
      E. None of these
      Answer & Explanation
      Answer – C. 314
      Explanation :
      14 + (1 * 12) = 14 + 12 = 26
      26 + (3 * 12) = 26 + 36 = 62
      62 + (5 * 12) = 62 + 60 = 122
      122 + (7 * 12) = 122 + 84 = 206
      206 + (9 * 12) = 206 + 108 = 314

    4. 364 362 371 343 ? 282
      A. 402
      B. 404
      C. 406
      D. 408
      E. None of these
      Answer & Explanation
      Answer – D. 408
      Explanation :
      364 – 1³ + 1 = 362
      362 + 2³ + 1 = 371
      371 – 3³ + 1 = 343

    5. 6 8 16 42 122 ?
      A. 364
      B. 366
      C. 362
      D. 361
      E. None of these
      Answer & Explanation
      Answer – A. 364
      Explanation :
      6 + 2 = 8
      8 + 8(= 3 * 2 + 2) = 16
      16 + 26(= 3 * 8 + 2) = 42
      42 + 80(= 3 * 26 + 2) = 122
      122 + 242(= 3 * 80 + 2) = 364

    6. 15 44 121 342 ? 2944
      A. 976
      B. 995
      C. 973
      D. 978
      E. None of these
      Answer & Explanation
      Answer – B. 995
      Explanation :
      15*3 – 1 = 44
      44*3 – 11 = 121
      121*3 – 21 = 342

    7. 61 49 57 41 45 ?
      A. 58
      B. 32
      C. 60
      D. 25
      E. None of these
      Answer & Explanation
      Answer – D. 25
      Explanation :

    8. 6 12 72 ? 10080
      A. 720
      B. 816
      C. 879
      D. 980
      E. None of these
      Answer & Explanation
      Answer – A. 720
      Explanation :
      6 * (1 + 1) = 12
      12 * (3 + 3) = 72
      72 * (5 + 5) = 720
      720 * (7 + 7) = 10080

    9. 5 6 14 45 ? 925
      A. 150
      B. 155
      C. 140
      D. 184
      E. None of these
      Answer & Explanation
      Answer – D. 184
      Explanation :
      (5*1)+1 = 6
      (6*2)+2 = 14
      (14*3)+3 = 45
      (45*4)+4 = 184

    10. 2 12 36 80 150 ?
      A. 270
      B. 275
      C. 260
      D. 252
      E. None of these
      Answer & Explanation
      Answer – D. 252
      Explanation :
      1³ + 1², 2³ + 2², 3³ + 3², 4³ + 4²….





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