1 = 1
2 = 1 + 1 = 10
3 = 10 + 1 = 11
4 = 11 + 1 = 100
5 = 100 + 1 = 101
6 = 101 + 1 = 110
7 = 110 + 1 = 111
8 = 111 + 1 = 1000
et.seq.,
Decimal 18 is 10010 in binary
Decimal 23 is 10111 in binary
Decimal 26 is 11010 in binary
Decimal 27 is 11011 in binary
11001 16 + 8 + 1
You write the number as a sum of decreasing powers of 2. Then for each power, you write 1 if it is present in the sum and 0 if not.So, 3 = 2 + 1 = 2^1 + 2^0and so the binary for 3 (in decimal) is 11.
Decimal 20 is 10100 in binary
Decimal 28 is 11100 in binary
3 in binary is 11
212 (decimal) is 11010100 (binary)
The plural of binary is binaries. As in "he used binaries to write the code".
11001