Number System Questions Practice Question and Answer

Q:

What least value must be assigned to ‘*’ so that the number 63576 * 2 is divisible by 8?

1201 0

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

Q:

The ratio of two positive numbers is 3 : 4. The sum of their squares is 400. What is the sum of the numbers?

1004 0

  • 1
    28
    Correct
    Wrong
  • 2
    22
    Correct
    Wrong
  • 3
    26
    Correct
    Wrong
  • 4
    24
    Correct
    Wrong
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Answer : 1. "28"

Q:

Sum of two numbers is thrice their difference. Their ratio is 

1275 0

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

Q:

How may digit are required to write numbers from 1 to 50?

1306 0

  • 1
    100
    Correct
    Wrong
  • 2
    92
    Correct
    Wrong
  • 3
    91
    Correct
    Wrong
  • 4
    50
    Correct
    Wrong
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Answer : 3. "91"

Q:

A number is doubled and 9 is added. If the resultant is tripled, it becomes 75. What is that number? 

866 0

  • 1
    6
    Correct
    Wrong
  • 2
    3.5
    Correct
    Wrong
  • 3
    18
    Correct
    Wrong
  • 4
    None of these
    Correct
    Wrong
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Answer : 3. "18 "

Q:

The sum of three consecutive odd natural numbers each divisible by 3 is 63. What is the largest among them? 

1466 0

  • 1
    21
    Correct
    Wrong
  • 2
    24
    Correct
    Wrong
  • 3
    27
    Correct
    Wrong
  • 4
    36
    Correct
    Wrong
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Answer : 3. "27 "

Q:

Unit digit in (264)102+(264)103 is:

1872 0

  • 1
    0
    Correct
    Wrong
  • 2
    4
    Correct
    Wrong
  • 3
    6
    Correct
    Wrong
  • 4
    8
    Correct
    Wrong
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Answer : 1. "0"

Q:

Out of six consecutive natural numbers, if the sum of first three is 27, what is the sum of the other three? 

1279 0

  • 1
    36
    Correct
    Wrong
  • 2
    35
    Correct
    Wrong
  • 3
    25
    Correct
    Wrong
  • 4
    24
    Correct
    Wrong
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Answer : 1. "36"

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