A number whose base is `16`

is called a hexadecimal number. By base 16, it means we have only 16 digits to form all the numbers. They are `0`

, `1`

, `2`

, `3`

, `4`

, `5`

, `6`

, `7`

, `8`

, `9`

, `A`

, `B`

, `C`

, `D`

, `E`

and `F`

.

If we follow hexadecimal number system in daily life, this is how we count 20 apples:

```
1
2
3
4
5
6
7
8
9
A
B
C
D
E
F
10
11
12
13
14
```

A hexadecimal literal starts with `0x`

and `0X`

.

```
0x8A
0XABC
```

Last updated on 9 Oct, 2022