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Basics of Number System

This test is based on Number System concepts. It includes counting, conversion, addition, subtraction etc.

15 Questions Published
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Questions

Question 1 Multiple Choice (Single Answer)

Which of the following numbers cannot be an octal number?

  1. 172
  2. 265
  3. 168
  4. 573
  5. 101
Question 2 Multiple Choice (Single Answer)

How many distinct digits are there in hexadecimal number system?

  1. 16
  2. 10
  3. 6
  4. 8
  5. 60
Question 3 Multiple Choice (Single Answer)

In a number system, 11 is equivalent to 6 of decimal number system. What is the base of the number system of 11?

  1. 2
  2. 10
  3. 6
  4. 5
  5. 4
Question 4 Multiple Choice (Single Answer)

Which number comes after 111 in binary number system?

  1. 112
  2. 1000
  3. 222
  4. 8
  5. 999
Question 5 Multiple Choice (Single Answer)

How many 4 digit numbers can be there in an octal number system?

  1. 48
  2. 84
  3. 4 * 8
  4. 4 + 8
  5. 48
Question 6 Multiple Choice (Single Answer)

What number in binary number system is equivalent to 77 in octal number system?

  1. 111111
  2. 1001101
  3. 11011101
  4. 100011001
  5. 01110111
Question 7 Multiple Choice (Single Answer)

What is the sum of octal 578 and octal 342?

  1. 1236
  2. 920
  3. 1142
  4. 578 is not an octal number.
  5. 777
Question 8 Multiple Choice (Single Answer)

Which of the following is equal to 0.75 + 0.25 in decimal number system?

  1. 0.100
  2. 0.910
  3. 1
  4. 100
  5. 910
Question 9 Multiple Choice (Single Answer)

Which of the following decimal numbers is equivalent to binary 0.11?

  1. 0.1
  2. 0.11
  3. 0.3
  4. 0.75
  5. 0.10
Question 10 Multiple Choice (Single Answer)

What is the sum of hexadecimal 1101 and hexadecimal 101?

  1. 10010
  2. 1202
  3. No hexadecimal sum is possible because they are binary numbers.
  4. 1101
  5. 1000
Question 11 Multiple Choice (Single Answer)

What result do we get when 1 is subtracted from 1000 in octal number system?

  1. 999
  2. 111
  3. 777
  4. 888
  5. They are not octal numbers.
Question 12 Multiple Choice (Single Answer)

If a character code system uses combinations of 8 binary digits to represent a character, how many characters it can have?

  1. 8
  2. 26
  3. 36
  4. 64
  5. 256
Question 13 Multiple Choice (Single Answer)

What is the decimal equivalent of hexadecimal number FF?

  1. 1515
  2. 255
  3. FF is not a number in any number system.
  4. 11111111
  5. 225
Question 14 Multiple Choice (Single Answer)

A 4 digit hexadecimal number is converted to binary number system. The leftmost digits are ignored. Which of the following is not possible?

  1. The binary equivalent of the 4 digit hexadecimal number has 13 digits.
  2. The binary equivalent of the 4 digit hexadecimal number has 14 digits.
  3. The binary equivalent of the 4 digit hexadecimal number has 15 digits.
  4. The binary equivalent of the 4 digit hexadecimal number has 16 digits.
  5. The binary equivalent of the 4 digit hexadecimal number has 17 digits.
Question 15 Multiple Choice (Single Answer)

Which of the following is correct, if we add 1 to the greatest 5 digit number in any number system?

  1. We will get the least 6 digit number in that number system.
  2. We will get the greatest 6 digit number in that number system.
  3. We will get a 5 digit number only.
  4. We will get a number with 6 zeroes.
  5. We will get a number with 1 as the rightmost digit.
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