The number 7 - written in binary is... 111
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When written as a binary number, the decimal number 63 is: 1 1 1 1 1 1
1101 = 8 + 4 + 1 = 13 (base 10).
The binary number 11 represents (1 x 2) + ( 1 x 1) which equals 3.
The largest binary number is 1 1 1 1 1 1 1 1 1 1 . It is equivalent to the decimal number 1,023 .
It is the same number: 1. Binary numbers are base-2, with each digit place corresponding to an exponent of 2 rather than 10 in the decimal number system. So that the number 11, which in decimal means 10 + 1, would represent 2 + 1 (3) in the binary system, which can only have the value 0 or 1 in each digit place.