Number System


  1. 356 x 936 - 356 x 836 = ?









  1. View Hint View Answer Discuss in Forum

    356 x 936 - 356 x 836 = 356 x (936 - 836 )
    = 356 x 100
    = 35600.

    Correct Option: A

    356 x 936 - 356 x 836 = 356 x (936 - 836 )
    = 356 x 100
    = 35600.


  1. 24 / 18 = ? / 6









  1. View Hint View Answer Discuss in Forum

    Let 24 / 18 = N / 6
    Then, 18N = 24 x 6

    Correct Option: D

    Let 24 / 18 = N / 6
    Then, 18N = 24 x 6
    ∴ N = ( 24 x 6) / 18
    = 8.



  1. ? / 196 = 72 / 56









  1. View Hint View Answer Discuss in Forum

    N / 196 = 72 / 56 =9/7
    Then, N/196 = 9/7 x 9/7 = 81 / 49

    Correct Option: C

    N / 196 = 72 / 56 =9/7
    Then, N/196 = 9/7 x 9/7 = 81 / 49
    So, N = (81 x 196) / 49 = 324.


  1. If p/q =4/5, then the value of 4/7 + {(2q - p) / (2q + p)} is ?









  1. View Hint View Answer Discuss in Forum

    Given Exp. = 4 / 7 + {(2q - p) / (2q + p)}
    Dividing numerator as well as denominator by q,
    Exp = 4/7 + {2-p/q) / (2 + p/q)}

    Correct Option: C

    Given Exp. = 4 / 7 + {(2q - p) / (2q + p)}
    Dividing numerator as well as denominator by q,
    Exp = 4/7 + {2-p/q) / (2 + p/q)}
    = 4/7 + {(2 - 4/5) / (2 + 4/5)}
    = 4/7 + 6/14
    = 4/7 + 3/7
    =7/7
    =1.



  1. If √3n =81,Then n=?









  1. View Hint View Answer Discuss in Forum

    ∵ √3n = 81
    ⇒ 3n/2 = 34

    Correct Option: D

    ∵ √3n = 81
    ⇒ 3n/2= 34
    ⇒ n/2 = 4
    ⇒ n = 8.