Decimal 28 is 11100 in binary
212 (decimal) is 11010100 (binary)
When you write the decimal number '7' in Base-2 (binary), you write '0111'.
2 --------- 10
Binary 1001111 is 79 in decimal.
17 = 10001
It is 1.11101111*26
111
54 = 00110110
11001 16 + 8 + 1
The number 200 written as a binary number is 11001000
You can use a base other than 10. Such as binary or hexedecimal or scientific notation. You can also write it out in English or the language of your choice.
Decimal 28 is 11100 in binary
212 (decimal) is 11010100 (binary)
1
10
10110