10010
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Decimal 18 is 10010 in binary
Binary form of 18 is "10010"
18 cannot be a binary number as binary numbers are base two and each digit can only be 0 or 1. If you are asking what is 18 in base 10 converted to base 2, then: 18 ÷ 2 = 9 r 0 9 ÷ 2 = 4 r 1 4 ÷ 2 = 2 r 0 2 ÷ 2 = 1 r 0 1 ÷ 2 = 0 r 1 reading the remainders in reverse order → 1810 = 100102
easy, 1011. in binary of course. convert 1011 binary to decimal you get 11.
You can are ASCII-tabellen. For converting binary to text