Each place represents a power of 2.
10101010 base 2 = 27 + 25 + 23 + 21 = 128 + 32 + 8 + 2 = 170
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10101010 + 01111 = 10111001 (170+15 = 185)
The binary code 10101010 represents the decimal number 170. In binary code, each digit is a power of 2, starting from the right with 2^0. Therefore, the binary digit 1 in the rightmost position represents 2^0, which is 1. Adding up the values of each digit in the binary code 10101010 gives 128 + 32 + 8 + 2 = 170 in decimal form.
The binary equivalent of the decimal number 131 is 10000011.
The number 14 in binary is 1110
The binary equivalent for the decimal number 23 is 10111