2. Number Systems and Conversions Quiz

Which digits are used in the octal number system?

• A-F

• 0-5

• 0-7

• 0-9

What is the decimal representation of the binary number 11000000111001?

• 12345

• 3039

• 240

• 360

How many digits are there in the hexadecimal number system?

• 16

• 12

• 10

• 8

Which of the following is NOT a number system supported by computer architecture?

• Trinary

• Decimal

• Octal

• Binary

What is the hexadecimal equivalent of the decimal number 725?

• 30071

• F0

• 3039

• 2D5

What is the first step in converting a decimal number to binary?

• Subtract from 1

• Add the remainders

• Divide by the base

• Multiply by 2

In binary to octal conversion, how are binary digits grouped?

• Sets of three

• Sets of four

• Sets of five

• Sets of two

What is the 1's complement of the binary number 1010?

• 1111

• 0101

• 0000

• 1010

Which operation is used for binary multiplication?

• Division

• Addition

• Subtraction

• Logical AND

What is the result of the binary addition 00011010 + 00001100?

• 00111100

• 00011110

• 00010110

• 00100110