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  • Question
  • The product of a number and its multiplicative inverse is


  • Options
  • A. 1
  • B. 0
  • C. -1
  • D. Infinity

  • Correct Answer


  • Explanation

    The mutiplicative inverse of a number is nothing but a reciprocal of a number.

    Now, the product of a number and its multiplicative inverse is always equal to 1.

     

    For example :

    Let the number be 15

    Multiplicative inverse of 15 = 1/15

    The product of a number and its multiplicative inverse is = 15 x 1/15 = 1.

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    Numbers problems


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    • 1. Find the number of factors of 9321 ?

    • Options
    • A. 4
    • B. 5
    • C. 7
    • D. 8
    • Discuss
    • 2. If x is a whole number, then x²(x² - 1) is always divisible by ?

    • Options
    • A. 4
    • B. 8
    • C. 12
    • D. None
    • Discuss
    • 3. If V = 12R / (r + R) , then R =

    • Options
    • A. Vr / (12 - V)
    • B. Vr + (V /12 )
    • C. V
    • D. V / (r - 12 )
    • Discuss
    • 4. The angles of a quadrilateral are in the ratio of 2:4:7:5. The smallest angle of the quadrilateral is equal to the smallest angle of a triangle. One of the angles of the triangle is twice the smallest angle of the triangle. What is the second largest angle of the triangle ?

    • Options
    • A. 80 degrees
    • B. 60 degrees
    • C. 120 degrees
    • D. 40 degrees
    • Discuss
    • 5. The sum of three consecutive odd numbers is 93. What is the middle number?

    • Options
    • A. 31
    • B. 33
    • C. 29
    • D. 27
    • Discuss
    • 6. 3131×31-27 =?

    • Options
    • A. 961 x 861
    • B. 961 x 961
    • C. 961 x 2
    • D. 29791
    • Discuss
    • 7. What is the remainder when 1523+2323 is divided by 19 ?

    • Options
    • A. 4
    • B. 3
    • C. 1
    • D. 0
    • Discuss
    • 8. Find the next number in the series 2, 3, 4, 8, 9, 10, 11, 16, 17, 18, 19, 20,...

    • Options
    • A. 27
    • B. 26
    • C. 24
    • D. 25
    • Discuss
    • 9. Find the next number in the series 141,137,146,130,155,119,...

    • Options
    • A. 147
    • B. 168
    • C. 162
    • D. 182
    • Discuss
    • 10. What is the smallest number by which 2880 must be divided in order to make it into a perfect square ?

    • Options
    • A. 2
    • B. 3
    • C. 4
    • D. 5
    • Discuss


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