Number System


  1. The face value of 8 in the numeral 458926 is ?









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    The face value of 8 in 458926 is 8

    Correct Option: B

    The face value of 8 in 458926 is 8


  1. The local value of 7 in the numeral 5679032 is ?









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    The local value of 7 in 5679032 is 70000.

    Correct Option: B

    The local value of 7 in 5679032 is 70000.



  1. ? x 48 = 173 x 240









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    Let y x 48 = 173 x 240
    Then y = (173 x 240) / 48

    Correct Option: C

    Let y x 48 = 173 x 240
    Then y = (173 x 240) / 48
    =173 x 5
    = 865 .


  1. 160 x 106 + 94 x 94 = ?









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    106 x 106 + 94 x 94 =(106)2+(94)2

    Correct Option: D

    106 x 106 + 94 x 94 =(106)2 + (94)2
    =1/2 [2(a2 + b2)]
    =1/2 [(a+b)2 + (a-b)2]
    =1/2 [(106 + 94)2 + (106 -94 )2]
    =1/2 [ (200)2 + (12)2]
    = 1/2 x [ 40000 + 144 ]
    = 40144/2
    = 20072 .



  1. 5358 x 51 = ?









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    5358 x 51 = 5358 x (50 +1 )

    Correct Option: B

    5358 x 51 = 5358 x (50 +1 )
    5358 x 50 + 5358 x 1
    =267900 + 5358 = 273258