Number System Questions Practice Question and Answer

Q:

The sum of three consecutive numbers is 87. The middle number is : 

1329 0

  • 1
    30
    Correct
    Wrong
  • 2
    28
    Correct
    Wrong
  • 3
    27
    Correct
    Wrong
  • 4
    29
    Correct
    Wrong
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Answer : 4. "29 "

Q:

The product of two numbers is 45 and their difference is 4. The sum of squares of the two numbers is

1322 0

  • 1
    135
    Correct
    Wrong
  • 2
    240
    Correct
    Wrong
  • 3
    73
    Correct
    Wrong
  • 4
    106
    Correct
    Wrong
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Answer : 4. "106"

Q:

Which one of the following represents the number' eleven thousand eleven hundred eleven'?

1319 0

  • 1
    111111
    Correct
    Wrong
  • 2
    12111
    Correct
    Wrong
  • 3
    11000110011
    Correct
    Wrong
  • 4
    XIXIXI
    Correct
    Wrong
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Answer : 2. "12111 "

Q:

Twice the difference between two numbers is equal to their sum. If one number is 15, find the other number.

1318 0

  • 1
    15
    Correct
    Wrong
  • 2
    10
    Correct
    Wrong
  • 3
    5
    Correct
    Wrong
  • 4
    20
    Correct
    Wrong
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Answer : 3. "5"

Q:

What will be come in place of question mark(?) in the following number series?
14, 8, 7 , 11.5, 22, ?

1316 0

  • 1
    54
    Correct
    Wrong
  • 2
    64
    Correct
    Wrong
  • 3
    62
    Correct
    Wrong
  • 4
    58
    Correct
    Wrong
  • 5
    56
    Correct
    Wrong
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Answer : 5. "56"

Q:

64329 is divided by a certain number. While dividing, the numbers, 175, 114 and 213 appear as three successive remainders. The divisor is?

1312 0

  • 1
    184
    Correct
    Wrong
  • 2
    224
    Correct
    Wrong
  • 3
    234
    Correct
    Wrong
  • 4
    296
    Correct
    Wrong
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Answer : 3. "234 "
Explanation :

Number at (i) = 643 – 175 = 468

Number at (ii) = 1752 – 114 = 1638

Number at (iii) = 1149 – 213 = 936

Clearly, 468, 1638 and 936 are multiples of 234 and 234 > 213.

Divisor = 234

Q:

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

1308 1

  • 1
    6
    Correct
    Wrong
  • 2
    4
    Correct
    Wrong
  • 3
    3
    Correct
    Wrong
  • 4
    5
    Correct
    Wrong
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Answer : 3. "3"

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:

1307 0

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

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