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CuriousTab

Number System problems


  • 1. 
    How many integers from 1 to 100 exist such that each is divisible by 5 and also has 5 as a digit?

  • Options
  • A. 10
  • B. 11
  • C. 12
  • D. 20
  • Discuss
  • 2. 
    The sum of the digits of two-digit number is 14 and the difference between the two digits number is 2. What is the product of the two digits of the two-digit number?

  • Options
  • A. 56
  • B. 48
  • C. 45
  • D. None of the above
  • Discuss
  • 3. 
    What number should be added to 231228 to make it exactly divisible by 33?

  • Options
  • A. 1
  • B. 2
  • C. 3
  • D. 4
  • Discuss
  • 4. 
    How many rational numbers are there between 1 and 1000?

  • Options
  • A. 998
  • B. 999
  • C. 1000
  • D. infinite
  • Discuss
  • 5. 
    The sum of 5 consecutive even numbers A, B, C, D and E is 130. What is the product of A and E?

  • Options
  • A. 720
  • B. 616
  • C. 660
  • D. 672
  • Discuss
  • 6. 
    The sum of 5 consecutive numbers is equal to 170. what is the product of largest and smallest numbers?

  • Options
  • A. 1512
  • B. 1102
  • C. 1152
  • D. 1210
  • Discuss
  • 7. 
    Which of the following number always divides the difference between the square of two consecutive odd numbers?

  • Options
  • A. 7
  • B. 3
  • C. 8
  • D. 6
  • Discuss
  • 8. 
    9856 x 156 + 9856 x 844 =?

  • Options
  • A. 9856000
  • B. 9836500
  • C. 9794560
  • D. 9698350
  • Discuss
  • 9. 
    6674 x 625 =?

  • Options
  • A. 4170160
  • B. 4072360
  • C. 4171050
  • D. 4171250
  • Discuss
  • 10. 
    9998 x 999 =?

  • Options
  • A. 9997001
  • B. 9988002
  • C. 9987012
  • D. 9898012
  • Discuss

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