Decimal 181 in binary is 10110101
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The binary value 1000 0000 represents the decimal number 128. In binary, each digit's place value doubles from right to left, starting at 1. Therefore, the rightmost digit is 1, representing 2^0, and the leftmost digit is 1, representing 2^7, which equals 128 in decimal.
111111112 = 1000000002 - 12 = [in decimal] 28 - 1 = 64 - 1 = 63
Decimal 4 is binary 100.
232
Invalid binary!