Number System Questions Practice Question and Answer

Q:

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

1980 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:

Find the mean of first Five Prime Numbers.

1966 1

  • 1
    5.4
    Correct
    Wrong
  • 2
    3.6
    Correct
    Wrong
  • 3
    5.6
    Correct
    Wrong
  • 4
    4.5
    Correct
    Wrong
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Answer : 3. "5.6"

Q:

The difference between the average of three consecutive even numbers and the average of the next two consecutive even number is 5. What is first even number?

1951 0

  • 1
    10
    Correct
    Wrong
  • 2
    12
    Correct
    Wrong
  • 3
    14
    Correct
    Wrong
  • 4
    Cannot be determined
    Correct
    Wrong
  • 5
    None of the above
    Correct
    Wrong
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Answer : 4. "Cannot be determined"

Q:

What approximate value will come in place of the question mark (?) in the following questions?

324.995 x 15.98 ÷ 4.002 + 36.88 =? 

1927 0

  • 1
    1300
    Correct
    Wrong
  • 2
    1230
    Correct
    Wrong
  • 3
    1440
    Correct
    Wrong
  • 4
    1380
    Correct
    Wrong
  • 5
    1340
    Correct
    Wrong
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Answer : 4. "1380 "

Q:

If  is divided by 18, the remainder is:

1885 0

  • 1
    17
    Correct
    Wrong
  • 2
    16
    Correct
    Wrong
  • 3
    1
    Correct
    Wrong
  • 4
    2
    Correct
    Wrong
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Answer : 3. "1"

Q:

If the seven-digit number 52A6B7C is divisible by 33, and A, B, C are primes, then the maximum value of 2A + 3B + C is:

1877 0

  • 1
    34
    Correct
    Wrong
  • 2
    32
    Correct
    Wrong
  • 3
    27
    Correct
    Wrong
  • 4
    23
    Correct
    Wrong
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Answer : 4. "23"

Q:

64329 is divided by a certain number, 175, 114 and 213 appear as three successive remainders. The devisor is

1868 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 smallest number of five digits exactly divisible by 476

1842 0

  • 1
    47600
    Correct
    Wrong
  • 2
    10000
    Correct
    Wrong
  • 3
    10476
    Correct
    Wrong
  • 4
    10472
    Correct
    Wrong
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Answer : 4. "10472"

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