Unix
If a file has read and write permissions for the owner, then the octal representation of the permissions will be

5
1
3
6
None of these

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Unix
The % key allows you

to move the cursor backward to the beginning of a word
to move the cursor to the first column in the current line
to move the cursor to a matching delimiter, when a delimiters a parenthesis, a bracket, or a brace.
to move the cursor to the upperleft corner of the screen

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