base 8 is used almost exclusively in UNIX file permissions so that each octal digit represents a 3-tuple of binary permissions (read/write/execute).It's also used in C-based languages and UNIX utilities to inject binary characters into an otherwise printable-character-only data stream. base 16 is a convenient way to represent four bits to a digit, especially as most architectures nowadays have a word size which is a multiple of four bits.base 64 is used in encoding mail so that binary files may be sent using only printable characters.Solution: Converting to decimal hours, 17 minutes divided by 60 minutes per hour is. Each digit represents six binary digits so you can pack three eight-bit characters into four six-bit digits (25% increased file size but guaranteed to get through the mail gateways untouched). When it was developed, it has 7 bits representing 128 unique characters and it was later extended to 8 bits representing 256 unique characters (including digits, special characters). 0.28 hours, rounding to 2 decimal places. Here is the ASCII Table with all ASCII Characters expressed with their Decimal Values, Octal Values, Binary Values, and Hexadecimal Values.
As an even less-useful snippet, the ultimate question and answer in The Hitchhikers Guide To The Galaxy was "What do you get when you multiply 6 by 9?" and "42".as a semi-useful snippet, base 60 comes from some very old civilisation (Babylon, Sumeria, Mesopotamia or something like that) and is the source of 60 seconds/minutes in the minute/hour, 360 degrees in a circle, 60 minutes (of arc) in a degree and so on.
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