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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.

All QuestionsEasyMediumHard
  1. Q21.

    In the series given below, a wrong number is given. Find out the number: 1, 2, 3, 5, 12, 15, 48, 53, 212, 217, 1090

    A. 15B. 48C. 53D. 212
    hardAsked in MAH MCA CET 2024View solution ›
  2. Q22.

    Find the missing letters in the series: BKK, DMM, FOO, __, JSS.

    A. HLLB. HBBC. HTTD. HQQ
    mediumAsked in MAH MCA CET 2024View solution ›
  3. Q23.

    Find the number from the given options which best completes the series: 39, 416, 525, ____, 749, 864

    A. 439B. 436C. 636D. 644
    easyAsked in NIMCET 2023View solution ›
  4. Q24.

    Identify the next two numbers in the following sequence: 17, 20, 9, 12, 5, 6, 3, 2, ____, ____

    A. 0, 2B. 2, 0C. 1, 2D. 2, 1
    mediumAsked in NIMCET 2023View solution ›
  5. Q25.

    Complete the series: 3, 10, 24, 45, 73, ____

    A. 108B. 121C. 91D. 69
    easyAsked in NIMCET 2023View solution ›
  6. Q26.

    Find the missing element in the series: A, CD, GHI, ____, UVWXY

    A. LMNOB. MNOPC. NOPQD. OPQR
    easyAsked in NIMCET 2013View solution ›
  7. Q27.

    Which pair of numbers comes next in the following series? 42, 40, 38, 35, 33, 31, 28

    A. 25 22B. 26 23C. 26 24D. 25 23
    easyAsked in NIMCET 2013View solution ›
  8. Q28.

    In the following number series one term is wrong. Find the wrong term. 5, 12, 19, 33, 47, 75, 104

    A. 12B. 47C. 75D. 104
    easyAsked in NIMCET 2011View solution ›
  9. Q29.

    Find the next term: 3, 8, 13, 24, 41, ?

    A. 70B. 75C. 80D. 85
    mediumAsked in NIMCET 2010View solution ›
  10. Q30.

    Find the next term: 4, 23, 60, 121, ?

    A. 212B. 221C. 241D. 242
    mediumAsked in NIMCET 2010View solution ›
  11. Q31.

    Find the missing number in the series: 4, 6, 3, 5, 2, ?

    A. 8B. 4C. 3D. 6
    easyAsked in NIMCET 2010View solution ›
  12. Q32.

    Find X and Y in the following arrangement (each column has a top entry and a bottom entry): Top row: S 8 W 16 A 5 C X A 4 Bottom row: 20 J 25 T 4 K 7 L Y N

    A. X is 6, Y is 7B. X is 5, Y is 15C. X is 4, Y is 6D. X is 16, Y is 23
    hardAsked in NIMCET 2010View solution ›
  13. Q33.

    Which should be the next two numbers in the series 28, 25, 5, 21, 18, 5, 14, ?, ?

    A. 11, 5B. 10, 7C. 11, 8D. 5, 10
    mediumAsked in NIMCET 2010View solution ›
  14. Q34.

    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 ›
  15. Q35.

    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 ›
  16. Q36.

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

    A. O25B. Q24C. P15D. S12
    easyAsked in MAH LLB 3 Year CET 2026View solution ›
  17. Q37.

    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 ›
  18. Q38.

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

    A. 71B. 91C. 86D. 81
    easyAsked in MAH LLB 3 Year CET 2026View solution ›
  19. Q39.

    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 ›
  20. Q40.

    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 ›
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