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Order of Magnitude problems


  • 1. 
    If x = ?3 + ?2, then the value of (x + 1)/(x - 1) - (x - 1)/(x + 1) is?

  • Options
  • A. ?3
  • B. ?2
  • C. ?6
  • D. None of above
  • Discuss
  • 2. 
    Which among ?8 and ?1000 is greater?

  • Options
  • A. ?8
  • B. ?1000
  • C. Both are equal
  • D. None of these
  • Discuss
  • 3. 
    Which among ?81 and ?1 is smaller?

  • Options
  • A. ?81
  • B. ?1
  • C. Both are equal
  • D. None of these
  • Discuss
  • 4. 
    IF (14) 3 is added to the square of a number, the answer to obtained is 4425. What is the number?

  • Options
  • A. 1849
  • B. 43
  • C. 41
  • D. 1681
  • Discuss
  • 5. 
    Which among ?10 and ?8 is greater?

  • Options
  • A. ?10
  • B. ?8
  • C. Both are equal
  • D. None of these
  • Discuss
  • 6. 
    Find the least number which multiplied with 74088 will make it a perfect square?

  • Options
  • A. 42
  • B. 44
  • C. 46
  • D. 48
  • Discuss
  • 7. 
    Find the number whose square is equal to the difference between the square of 75.15 and 60.12.?

  • Options
  • A. 225.9
  • B. 67.635
  • C. 45.09
  • D. 15.03
  • Discuss
  • 8. 
    A general wishing to draw up his 16160 soldiers in the form as a solid square, found that he had 31 soldiers left over. Find the number of soldiers in the front.?

  • Options
  • A. 126
  • B. 125
  • C. 128
  • D. 127
  • Discuss
  • 9. 
    A certain number of people agree to subscribe as many rupees each as there are subscribers. The whole subscription is Rs. 2582449. Find the number of subscriber.

  • Options
  • A. 1607
  • B. 1291225
  • C. 1503
  • D. 1603
  • Discuss
  • 10. 
    Each student of class IX contributed some money for a picnic. The money contributed by each student was equal to the cube of the total number of student. If the total collected amount was Rs. 29791, then find the total number of students.

  • Options
  • A. 30
  • B. 31
  • C. 33
  • D. 40
  • Discuss

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