What is expressed in the octal (base-8) system?
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I decided to write this question since I haven't yet seen other number base questions dealing with decimal conversions. We may all know how to convert whole numbers, but the process is a little bit different when dealing with fractions. To start: 3 1 = 1 0 1 3 + 1 0 2 3 + 1 0 3 3 + . . . . We represent a decimal in base-10 by fractions of powers of 10. So naturally, a decimal represented in base-8 (octal) should be represented by fractions of powers of 8: 3 1 = 8 1 x 1 + 8 2 x 2 + 8 3 x 3 + . . . . To solve we first multiply 3 1 by 8: 3 8 . We then change this improper fraction to a mixed number, giving us our first x n : 3 8 = 2 3 2 ; x 1 = 2 . We simply repeat this process to get closer: 3 2 ⋅ 8 = 5 3 1 . If you look at the result of the second iteration of this algorithm, we get 3 1 again, so we can be certain that this pattern of 252525 will continue on forever.