Number System Questions Practice Question and Answer

Q:

A student multiplies a number with 7.2 instead of 0.72. If due to this answer is 2592 more than the right answer, then what was the original number? 

1557 0

  • 1
    560
    Correct
    Wrong
  • 2
    500
    Correct
    Wrong
  • 3
    420
    Correct
    Wrong
  • 4
    400
    Correct
    Wrong
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Answer : 4. "400"

Q:

Direction : What should come in place of the question (?) in the following question.

23.56 + 134.44+ 4142.25=?

1550 0

  • 1
    4302.25
    Correct
    Wrong
  • 2
    4300.75
    Correct
    Wrong
  • 3
    4301.25
    Correct
    Wrong
  • 4
    4300.25
    Correct
    Wrong
  • 5
    None of these
    Correct
    Wrong
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Answer : 4. "4300.25"

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Answer : 4. "None of these"

Q:

Find the value of 13/16 share of land whose 9/7 share is worth 10,116.

1539 0

  • 1
    6394.75
    Correct
    Wrong
  • 2
    6302.75
    Correct
    Wrong
  • 3
    6392.75
    Correct
    Wrong
  • 4
    6391.75
    Correct
    Wrong
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Answer : 3. "6392.75"

Q:

How many natural numbers divisible by 7 are there between 3 and 200? 

1538 0

  • 1
    28
    Correct
    Wrong
  • 2
    29
    Correct
    Wrong
  • 3
    27
    Correct
    Wrong
  • 4
    36
    Correct
    Wrong
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Answer : 1. "28 "
Explanation :

Number just greater than 3 which is divisible by 7 = 7

Number just smaller than 200 which is divisible by 7 = 196

Here, a = 7, an = 196,

d = 7, n = 8

a= a + (n –1)d

⇒196 = 7 + (n – 1) × 7

⇒ 

⇒ n = 27 + 1 = 28

Note : We can find the answer after dividing 200 by 7. The quotient is our answer.

Q:

The median of 31, 25, 17, 23, 45 and 59 is:

1530 0

  • 1
    23
    Correct
    Wrong
  • 2
    25
    Correct
    Wrong
  • 3
    31
    Correct
    Wrong
  • 4
    28
    Correct
    Wrong
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Answer : 4. "28"

Q:

The greatest number that can be subtracted from 10000 so that the remainder may be divisible by 32, 36, 48 and 54 is:

1526 0

  • 1
    9216
    Correct
    Wrong
  • 2
    9316
    Correct
    Wrong
  • 3
    9136
    Correct
    Wrong
  • 4
    9236
    Correct
    Wrong
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Answer : 3. "9136"

Q:

How many numbers are there from 500 to 650 (including both) which are neither divisible by 3 nor by 7?

1521 0

  • 1
    21
    Correct
    Wrong
  • 2
    121
    Correct
    Wrong
  • 3
    87
    Correct
    Wrong
  • 4
    99
    Correct
    Wrong
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Answer : 3. "87 "

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