3rd December 2019

16

# How many hex digits are required to represent decimal numbers up to 20 000?

So, 3 hex digits are not enough to represent the decimal numbers up to 20,000. The largest decimal value that can be represented by a 4-bit hex number is, Therefore, the number of hex digits required to represent decimal numbers up to 20,000 is .

Keeping this in view, what is the decimal number 15 in hex?

131101D
141110E
151111F
160001 000010 (1+0)

What is the 0x in hex?

It's a prefix to indicate the number is in hexadecimal rather than in some other base. The C programming language uses it to tell compiler. Example : 0x6400 translates to 6*16^3 + 4*16^2 + 0*16^1 +0*16^0 = 25600. When compiler reads 0x6400 , It understands the number is hexadecimal with the help of 0x term.

How many hexadecimal digits are in a binary digit?

This means that each digit in hexadecimal is the same as four digits in binary. Octal uses a three-bit binary system. In the decimal system, the first digit is the one's place, the next digit to the left is the ten's place, the next is the hundred's place, etc. In hexadecimal, each digit can be 16 values, not 10.