0o4200

0o4200 refers to a numerical value represented in octal (base-8) notation. The leading "0o" prefix is a common convention to indicate that the subsequent digits are to be interpreted as an octal number. In this case, the digits are 4, 2, and 0. To convert this octal number to its decimal (base-10) equivalent, we multiply each digit by the corresponding power of 8 and sum the results. Starting from the rightmost digit, the calculation is as follows: (0 8^0) + (2 8^1) + (4 8^2). This simplifies to (0 1) + (2 8) + (4 64), which equals 0 + 16 + 256. Therefore, the decimal value of 0o4200 is 272. Octal notation is sometimes used in computing, particularly in older systems or when representing file permissions, as it offers a more compact way to express binary data compared to decimal.