logo

CuriousTab

CuriousTab

Discussion


Home Aptitude Numbers Comments

  • Question
  • 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

  • Correct Answer


  • Explanation
    Let the two consecutive odd integers be (2 n + 1) and (2 n + 3). Then,

    (2n + 3)2 - (2n + 1)2 = (2n + 3 + 2n + 1) (2n + 3 - 2n - 1)

         = (4n + 4) x 2

         = 8(n + 1), which is divisible by 8.


  • Numbers problems


    Search Results


    • 1. 72519 x 9999 =?

    • Options
    • A. 725117481
    • B. 674217481
    • C. 685126481
    • D. 696217481
    • E. None of these
    • Discuss
    • 2. What value should come in place of the question mark(?) in the following question? (?) + 3699 + 1985 - 2047 = 31111

    • Options
    • A. 34748
    • B. 27474
    • C. 30154
    • D. 27574
    • E. None of these
    • Discuss
    • 3. 4500 x? = 3375

    • Options
    • A. 25
    • B. 34
    • C. 14
    • D. 35
    • E. None of these
    • Discuss
    • 4. The smallest 5 digit number exactly divisible by 41 is:

    • Options
    • A. 1004
    • B. 10004
    • C. 10045
    • D. 10025
    • E. None of these
    • Discuss
    • 5. What is the unit digit in(795 - 358)?

    • Options
    • A. 0
    • B. 4
    • C. 6
    • D. 7
    • Discuss
    • 6. 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
    • 7. 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
    • 8. (35423 + 7164 + 41720) - (317 x 89) =?

    • Options
    • A. 28213
    • B. 84307
    • C. 50694
    • D. 56094
    • E. None of these
    • Discuss
    • 9. 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
    • Discuss
    • 10. 
      (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


    Comments

    There are no comments.

Enter a new Comment