## What is 0X49?

0X49 is a hexadecimal (hex) number. We can tell it is a hex number because it starts with 0X. Hexadecimal numbers like 0X49 are not often used in daily life, but we see them used for certain things such as html colors, shortening binary numbers, computer error codes, and math exercises.

## What is 0xffff value?

0xffff is a hexadecimal number. The 0x only tells you that the value after the 0x is hexadecimal. Hexadecimal has 16 digits from 0 to 9 and from a to f (which means, a = 10, b = 11, c = 12, d = 13, e = 14, f = 15 in a hexadecimal number). Example: ffff = (15*16^3) + (15*16^2) + (15*16^1) + (15*16^0) = 65535.

**What is the decimal equivalent of the hex number 0x8A?**

For example, the hexadecimal number 0x8A represents a decimal value of (8 * 16 + 10) = (128 + 10) = 138. In a three-digit hexadecimal number, the first digit represents the number of 256s (=16*16), etc.

### What is the value of 0x10?

0x means the number is hexadecimal, or base 16. 0x10 is 16.

### What is the binary value of 120?

1111000

120 in binary is 1111000.

**Why is 65535 important?**

In Internet protocols, 65535 is also the number of TCP and UDP ports available for use, since port 0 is reserved. For example, =850*77.1 displays as 100000 rather than 65535. Microsoft reports this to be a display-only bug for only 6 floating point numbers near 65535 and 65536.

## What is in hexadecimal?

The hexadecimal numeral system, often shortened to “hex”, is a numeral system made up of 16 symbols (base 16). The standard numeral system is called decimal (base 10) and uses ten symbols: 0,1,2,3,4,5,6,7,8,9. Hexadecimal uses the decimal numbers and six extra symbols.

## What does 0x04 mean?

0x04 is hex for 4 (the 0x is just a common prefix convention for base 16 representation of numbers – since many people think in decimal), and that would be the fourth byte (since they are saying offset, they probably count the first byte as byte 0, so offset 0x04 would be the 5th byte).