The number 20 in binary is 10100
Decimal 23 is 10111 in binary
Decimal 18 is 10010 in binary
Decimal 26 is 11010 in binary
Decimal 27 is 11011 in binary
11001 16 + 8 + 1
Decimal 28 is 11100 in binary
212 (decimal) is 11010100 (binary)
The plural of binary is binaries. As in "he used binaries to write the code".
11001
10100
4294967294 written in binary would be 11111111111111111111111111111110