Number System


  1. 1
      + 999 +
    692
    × 99 is equal to
    7693









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    Expression   =
    1
      + 999 +
    692
    × 99
    7693

    Correct Option: B

    Expression   =
    1
      + 999 +
    692
    × 99
    7693

    =
    1
      + 999 × 99 +
    692
    × 99
    7693

    =
    1
      + (1000 − 1) 99 +
    692
    77

    =
    1
      +
    692
    + 99000 − 99
    77

    =
    693
      + 99000 − 99
    7

    Required answer = 99 + 99000 – 99 = 99000


  1. The value of (0.3467 + 0.1333) is :









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    ∴  Required sum = 0.3467 + 0.1333 = 0.4801

    Correct Option: B

    ∴  Required sum = 0.3467 + 0.1333 = 0.4801



  1. (325 + 326 + 327 + 328) is divisible by









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    Expression = 325 + 326 + 327 + 328
    = 325 (1 + 3 + 32 + 33)

    Correct Option: D

    Expression = 325 + 326 + 327 + 328
    = 325 (1 + 3 + 32 + 33)
    = 325 (1 + 3 + 9 + 27)
    = 325 × 40, which is clearly divisible by 30.
    Hence the given expression is divisible by 30.


  1. By which number should 0.022 be multiplied so that product becomes 66 ?









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    Let required number be p.
    According to question ,
    ∴  0.022 × p = 66

    Correct Option: A

    Let required number be p.
    According to question ,
    ∴  0.022 × p = 66

    ⇒  p =
    66
    = 3000
    0.22



  1. (271 + 272 + 273 + 274) is divisible by









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    Expression = (271 + 272 + 273 + 274)
    Expression = 271 (1 +2 + 4 + 8)

    Correct Option: B

    Expression = (271 + 272 + 273 + 274)
    Expression = 271 (1 +2 + 4 + 8)
    = 271 × 15 = 271 × 3 × 5 , Which is exactly divisible by 10.
    Therefore required answer is 10 .