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  • Question
  • Direction: What should come in the place of question mark (?) in the following number series? 9, 11, 16, 26, ?, 69


  • Options
  • A. 31
  • B. 38
  • C. 43
  • D. 45

  • Correct Answer
  • 43 

    Explanation

    Double Difference pattern is followed in the above series. +2, +5, + 10, +17, +26

  • Tags: AIEEE, Bank Exams, GATE

    Numbers problems


    Search Results


    • 1. The difference of squares of two numbers is 180. The square of the smaller number is 8 times the larger number. Find two numbers.

    • Options
    • A. 10 & 12
    • B. 10 & 18
    • C. 12 & -18
    • D. -12 & 18
    • Discuss
    • 2. What is the value of 10.2+10.02+10.002+... upto 9 terms

    • Options
    • A. 222222222
    • B. 111111111
    • C. 555555555
    • D. 525252525
    • Discuss
    • 3. What is the sum of the first 11 terms of an arithmetic progression if the first term is -31 and last term is 29?

    • Options
    • A. 42
    • B. -11
    • C. 28
    • D. 12
    • Discuss
    • 4. The sum of 10 terms of the arithmetic series is 390. If the third term of the series is 19. Find the first term

    • Options
    • A. 3
    • B. 5
    • C. 7
    • D. 8
    • Discuss
    • 5. The 4th and 7th term of an arithmetic progression are 11 and -4 respectively. What is the 15th term?

    • Options
    • A. -49
    • B. -44
    • C. -39
    • D. -34
    • Discuss
    • 6. What will come in the place of the question mark (?) in the following number series?305, 338, 404, 503, 635 , (?)

    • Options
    • A. 820
    • B. 880
    • C. 800
    • D. 890
    • Discuss
    • 7. What will be the next set of numbers in the series? (2,3), (3,5), (5,7), (7,11), (11,13), ___

    • Options
    • A. 13,15
    • B. 15,17
    • C. 13,17
    • D. 13,19
    • Discuss
    • 8. All rational numbers are ____ numbers.

    • Options
    • A. integer
    • B. whole
    • C. irrational
    • D. real
    • Discuss
    • 9. What is the least number that can be multiplied to 69120 to make it a perfect cube?

    • Options
    • A. 10
    • B. 50
    • C. 25
    • D. 5
    • Discuss
    • 10. What is the least number that when divided by 63 and 105 leaves remainder 4 in each case?

    • Options
    • A. 634
    • B. 256
    • C. 214
    • D. 319
    • Discuss


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