Number System Review

Since computers only understand an electrical current being either on or off, it needs to use patterns of ones and zeros representing on or off as its own language.

• Denary

• Hexadecimal

• Binary

• Octal

It is used to represent colours among other data.

• Binary

• Denary

• Octal

• Hexadecimal

What is the decimal (denary) equivalent of the binary number 10111111?

• 191

• 192

• 193

• 194

Convert the binary number 11001010 to its decimal (denary) equivalent.

• 199

• 200

• 201

• 202

What is the binary representation of the decimal number 47?

• 101100

• 001111

• 101111

• 101110

Convert the decimal number 84 into its binary representation

• 1010100

• 1010101

• 0010100

• 1000100

What is the hexadecimal representation of the binary number 10111111?

• BF

• BC

• AC

• EF

What is the binary representation of the hexadecimal number C2E9?

• 1100001011100001

• 1100001011101000

• 1000001011101001

• 1100001011101001

Add the binary numbers 11010 and 111001.

• 1001010

• 1001011

• 0001011

• 1001000

If a computer system attempts to represent a number larger than what will fit inside its registers, this error will occur.

• overrun

• overflow

• overseas

• game over