Number system Practice Question and Answer

Q:

A number when divided by 192 gives a remainder of 54. What remainder would be obtained on dividing the same number by 16 ?

1022 0

  • 1
    2
    Correct
    Wrong
  • 2
    4
    Correct
    Wrong
  • 3
    6
    Correct
    Wrong
  • 4
    8
    Correct
    Wrong
  • Show AnswerHide Answer
  • Workspace

Answer : 3. "6"
Explanation :

Here, the first divisor 192 is a multiple of second divisor 16.

∴ Required remainder

= remainder obtained by dividing 54 by 16 = 6

Q:

The value of (81)3.6 * (9)2.7/ (81)4.2 * (3) is __

1021 0

  • 1
    3
    Correct
    Wrong
  • 2
    6
    Correct
    Wrong
  • 3
    9
    Correct
    Wrong
  • 4
    8.2
    Correct
    Wrong
  • Show AnswerHide Answer
  • Workspace

Answer : 3. "9"
Explanation :

(81)3.6 * (9)2.7/(81)4.2 * (3) = (3)14.4 * (3)5.4/(3)16.8 * (3)

= 314.4+5.4-16.8-1

= 32

= 9 

Q:

On adding a natural number P to the product of four consecutive natural numbers we get a perfect square number. The minimum value of P is:

1019 0

  • 1
    8
    Correct
    Wrong
  • 2
    2
    Correct
    Wrong
  • 3
    4
    Correct
    Wrong
  • 4
    1
    Correct
    Wrong
  • Show AnswerHide Answer
  • Workspace

Answer : 4. "1"

Q:

Which of the following numbers is divisible by 25?

1017 0

  • 1
    303310
    Correct
    Wrong
  • 2
    373355
    Correct
    Wrong
  • 3
    303375
    Correct
    Wrong
  • 4
    22040
    Correct
    Wrong
  • Show AnswerHide Answer
  • Workspace

Answer : 3. "303375"

Q:

The largest natural number which exactly divides the product of any four consecutive natural numbers is

1013 0

  • 1
    24
    Correct
    Wrong
  • 2
    120
    Correct
    Wrong
  • 3
    6
    Correct
    Wrong
  • 4
    12
    Correct
    Wrong
  • Show AnswerHide Answer
  • Workspace

Answer : 1. "24 "

Q:

The east positive integer that should be subtracted from 3011 x 3012 so that the difference is a perfect square is-

1012 0

  • 1
    3009
    Correct
    Wrong
  • 2
    3010
    Correct
    Wrong
  • 3
    3011
    Correct
    Wrong
  • 4
    3012
    Correct
    Wrong
  • Show AnswerHide Answer
  • Workspace

Answer : 3. "3011"
Explanation :

We know that 3011 x 3012

= 3011 (3011 + 1)

= (3011)+ 3011

We know    

Required least number = 3011

Q:

Directions: Find the wrong number in the following number series:

0.5, 2, 1, 4, 32, 512, 16384

1011 0

  • 1
    1
    Correct
    Wrong
  • 2
    2
    Correct
    Wrong
  • 3
    4
    Correct
    Wrong
  • 4
    32
    Correct
    Wrong
  • 5
    512
    Correct
    Wrong
  • Show AnswerHide Answer
  • Workspace

Answer : 2. "2"

Q:

The least number that should be added to 2,397 so that the sum is exactly divisible by 3, 4, 5 and 6 ?

1009 1

  • 1
    6
    Correct
    Wrong
  • 2
    4
    Correct
    Wrong
  • 3
    3
    Correct
    Wrong
  • 4
    5
    Correct
    Wrong
  • Show AnswerHide Answer
  • Workspace

Answer : 3. "3"

      Report Error

    Please Enter Message
    Error Reported Successfully

      Report Error

    Please Enter Message
    Error Reported Successfully

      Report Error

    Please Enter Message
    Error Reported Successfully

      Report Error

    Please Enter Message
    Error Reported Successfully

      Report Error

    Please Enter Message
    Error Reported Successfully

      Report Error

    Please Enter Message
    Error Reported Successfully

      Report Error

    Please Enter Message
    Error Reported Successfully

      Report Error

    Please Enter Message
    Error Reported Successfully