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  • Question
  • How many terms are there in the G.P. 3, 6, 12, 24, ... , 384?


  • Options
  • A. 8
  • B. 9
  • C. 10
  • D. 11
  • E. 7

  • Correct Answer


  • Explanation
    Here a = 3 and r = 6 = 2. Let the number of terms be n.
    3

    Then, tn = 384   ⟹  arn-1 = 384

    ⟹ 3 x 2n - 1 = 384

    ⟹ 2n-1 = 128 = 27

    n - 1 = 7

    n = 8

    ∴ Number of terms = 8.


  • Numbers problems


    Search Results


    • 1. (35423 + 7164 + 41720) - (317 x 89) =?

    • Options
    • A. 28213
    • B. 84307
    • C. 50694
    • D. 56094
    • E. None of these
    • Discuss
    • 2. The sum of all two digit numbers divisible by 5 is:

    • Options
    • A. 1035
    • B. 1245
    • C. 1230
    • D. 945
    • E. None of these
    • Discuss
    • 3. In dividing a number by 585, a student employed the method of short division. He divided the number successively by 5, 9 and 13 (factors 585) and got the remainders 4, 8, 12 respectively. If he had divided the number by 585, the remainder would have been

    • Options
    • A. 24
    • B. 144
    • C. 292
    • D. 584
    • Discuss
    • 4. The difference of the squares of two consecutive odd integers is divisible by which of the following integers?

    • Options
    • A. 3
    • B. 6
    • C. 7
    • D. 8
    • Discuss
    • 5. 72519 x 9999 =?

    • Options
    • A. 725117481
    • B. 674217481
    • C. 685126481
    • D. 696217481
    • E. None of these
    • Discuss
    • 6. 
      (963 + 476)2 + (963 - 476)2 =?
      (963 x 963 + 476 x 476)

    • Options
    • A. 1449
    • B. 497
    • C. 2
    • D. 4
    • E. None of these
    • Discuss
    • 7. Which of the following number is divisible by 24?

    • Options
    • A. 35718
    • B. 63810
    • C. 537804
    • D. 3125736
    • Discuss
    • 8. If the number 5 * 2 is divisible by 6, then * =?

    • Options
    • A. 2
    • B. 3
    • C. 6
    • D. 7
    • Discuss
    • 9. On dividing a number by 5, we get 3 as remainder. What will the remainder when the square of the this number is divided by 5?

    • Options
    • A. 0
    • B. 1
    • C. 2
    • D. 4
    • Discuss
    • 10. 35 + 15 x 1.5 =?

    • Options
    • A. 85
    • B. 51.5
    • C. 57.5
    • D. 5.25
    • E. None of these
    • Discuss


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