Question

Conversion of an octal number ${73}_8$ to binary number is?

• A. ${110111}_2$
• B. ${111100}_2$
• C. ${110010}_2$
• D. ${111011}_2$
• E. None of the above

Answer 1

Answer: (D)

${111011}_2$

Conversion of an octal number 738 to binary number is 1110112

Representation of an Octal Number. As the octal number system uses only eight digits (0 through 7) there are no numbers or letters used above 8, but the conversion from decimal to octal and binary to octal follows the same pattern as we have seen previously for hexadecimal.

Octal (base-8) and hexadecimal (base-16) numbers are a reasonable compromise between the binary (base-2) system computers use and decimal (base-10) system most humans use. ... I think hex wins over octal because it can easily be used to represent bytes and 16/32/64-bit numbers.