Number System Questions Practice Question and Answer

Q:

Divide 50 into two parts so that the sum of their reciprocals is   $${1\over 12} $$

1319 0

  • 1
    24, 36
    Correct
    Wrong
  • 2
    28, 22
    Correct
    Wrong
  • 3
    35, 15
    Correct
    Wrong
  • 4
    20, 30
    Correct
    Wrong
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Answer : 4. "20, 30 "

Q:

The least number that should be added to 35460 so that the sum is exactly divisible by 3, 4, 5 and 7 is:

1317 0

  • 1
    180
    Correct
    Wrong
  • 2
    420
    Correct
    Wrong
  • 3
    240
    Correct
    Wrong
  • 4
    84
    Correct
    Wrong
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Answer : 3. "240 "

Q:

The product of 1.7 ´ 104 and 12.5 ´ 10–6 is expressed in the standard form as k ´ 10n . The value of (2k + n) is

1308 0

  • 1
    2.125
    Correct
    Wrong
  • 2
    1.125
    Correct
    Wrong
  • 3
    2.25
    Correct
    Wrong
  • 4
    3.25
    Correct
    Wrong
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Answer : 4. "3.25"

Q:

A number when divided by 899 gives a remainder 63. If the same number is divided by 29, the remainder will be

1304 0

  • 1
    10
    Correct
    Wrong
  • 2
    5
    Correct
    Wrong
  • 3
    4
    Correct
    Wrong
  • 4
    2
    Correct
    Wrong
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Answer : 2. "5"
Explanation :

Solution: $${Remainder\over 29}={7\over 9}$$

=> remainder (शेषफल)=5

Q:

If 30% of a = b, then b% of 50 is the same as:

1302 0

  • 1
    5% of a
    Correct
    Wrong
  • 2
    10% of a
    Correct
    Wrong
  • 3
    15% of a
    Correct
    Wrong
  • 4
    12% of a
    Correct
    Wrong
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Answer : 3. "15% of a"

Q:

1! + 2! + 3! + 4! + ......... + 50! Find the unit digit of?

1300 0

  • 1
    1
    Correct
    Wrong
  • 2
    3
    Correct
    Wrong
  • 3
    5
    Correct
    Wrong
  • 4
    8
    Correct
    Wrong
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Answer : 2. "3"

Q:

Find the greatest value of (a + b) such than an 8-digit number 4523a60 b is divisible by 15.

1298 0

  • 1
    13
    Correct
    Wrong
  • 2
    15
    Correct
    Wrong
  • 3
    11
    Correct
    Wrong
  • 4
    9
    Correct
    Wrong
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Answer : 1. "13 "

Q:

Which of the following is the least 6-digit number that is divisible by 93?

1297 0

  • 1
    100065
    Correct
    Wrong
  • 2
    100070
    Correct
    Wrong
  • 3
    100075
    Correct
    Wrong
  • 4
    100068
    Correct
    Wrong
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Answer : 4. "100068"

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