Series Questions with Solutions

68 questions44 easy21 medium3 hard

Series questions give a sequence of numbers, letters or a mix of both, and ask you to find the next term, a missing term, or the wrong term. This topic covers number series (based on differences, squares and cubes, multiplication, or mixed operations), letter series, alphanumeric series, and repeating letter patterns. Start by checking the differences between consecutive terms. If those don't show a pattern, check the second differences, ratios, squares and cubes nearby, or whether two separate series alternate. For letter series, convert letters to their alphabet positions and look for the number pattern. With practice, recognising common patterns becomes quick and these questions become reliable marks. Practise the series questions below, each with a step-by-step solution that shows the pattern.

  1. Q21.

    How many 5s are there in the following number series, each of which is immediately followed by 4 but not immediately preceded by 6? 456 656 455 455 654 456 456 5454

    A. OneB. ThreeC. FourD. Two
    easyAsked in NIMCET 2009View solution ›
  2. Q22.

    What is the next letter in the series O T T F F S S E N ___ ?

    A. TB. OC. ED. N
    easyAsked in NIMCET 2008View solution ›
  3. Q23.

    Complete the series. A1, C4, F9, J16, ?

    A. O25B. Q24C. P15D. S12
    easyAsked in MAH LLB 3 Year CET 2026View solution ›
  4. Q24.

    In the following series, identify the missing first term. ....., C-32, D-64, E-128, F-256, G-512.

    A. B-16B. H- 612C. I- 702D. A-4
    easyAsked in MAH LLB 3 Year CET 2026View solution ›
  5. Q25.

    Complete the number series given below: 1, 9, 25, 49, ?

    A. 71B. 91C. 86D. 81
    easyAsked in MAH LLB 3 Year CET 2026View solution ›
  6. Q26.

    In the following question, a number series is given with one term missing. Choose the correct alternative that will fill the same pattern in the blank space. 2, 15, 41, 80, ___

    A. 91B. 121C. 116D. 132
    easyAsked in MAH LLB 3 Year CET 1 April Shift 2 2026View solution ›
  7. Q27.

    Find the missing letter in the series: A, D, I, P, ?

    A. UB. WC. YD. T
    easyAsked in MAH LLB 3 Year CET 1 April Shift 2 2026View solution ›
  8. Q28.

    In the question given below, select the missing letter from the given responses and complete the table. E G I R U X J N ?

    A. PB. RC. OD. Q
    easyAsked in MAH LLB 3 Year CET 2 April Shift-2 2026View solution ›
  9. Q29.

    Find the next number: 5, 12, 7, 14, 9, ?

    A. 18B. 20C. 16D. 21
    easyAsked in MAH LLB 3 Year CET 2 April Shift-2 2026View solution ›
  10. Q30.

    Fill in the blank in the series: ELFA, GLHA, ILJA, _____, MLNA:

    A. OLPAB. KLMAC. LLMAD. KLLA
    easyAsked in NIMCET 2020View solution ›
  11. Q31.

    Find out the wrong number in the following number series: 56, 58, 62, 70, 84, 118, 182

    A. 58B. 62C. 84D. 118
    easyAsked in NIMCET 2020View solution ›
  12. Q32.

    In this series, looking at the letter pattern, fill the blank in the middle of the series: ELFA, GLHA, ILJA, _____, MLNA

    A. OLPAB. KLMAC. LLMAD. KLLA
    easyAsked in NIMCET 2021View solution ›
  13. Q33.

    Insert the missing number: 8, 7, 11, 12, 14, 17, 17, 22, ?

    A. 27B. 20C. 22D. 24
    easyAsked in NIMCET 2021View solution ›
  14. Q34.

    Insert the missing number: 16, 33, 65, 131, 261, ?

    A. 523B. 521C. 613D. 721
    easyAsked in NIMCET 2021View solution ›
  15. Q35.

    Identify the fifth number in the series: 122, 144, 166, 188, ?

    A. 234B. 210C. 345D. 310
    easyAsked in NIMCET 2022View solution ›
  16. Q36.

    DNN, FQQ, HTT, ______, LZZ

    A. JXXB. JVVC. JWWD. IWW
    easyAsked in NIMCET 2022View solution ›
  17. Q37.

    Identify the sixth number in the series: 6, 11, 21, 36, 56, ?

    A. 52B. 21C. 81D. 82
    easyAsked in NIMCET 2022View solution ›
  18. Q38.

    What is the number that comes next in the series? 1, 2, 3, 6, 11, 20, 37, 68, ?

    A. 105B. 124C. 125D. 126
    easyAsked in NIMCET 2014 +1View solution ›
  19. Q39.

    Find the number that comes next in the series: 120, 99, 80, 63, 48, ...

    A. 35B. 38C. 39D. 40
    easyAsked in NIMCET 2014View solution ›
  20. Q40.

    The missing number in the following series 336, 210, 120, 60, ______, 6 is

    A. 24B. 30C. 34D. 40
    easyAsked in NIMCET 2017View solution ›