_________ format covers five floating-point representations, three binary and two decimal, whose encodings are specified by the standard, and which can be used for arithmetic.

The command to kill (delete) all characters from the cursor position to the end of the line is:

a: [Ctrl-k] b: [Ctrl-d] c: [Ctrl-x] [Ctrl-k] d: [Ctrl-k] [Ctrl-d] e: [Ctrl-x] Del

Regular expression operator _________ inside square brackets will not match any of the characters in that set of brackets.

Fill in the blank(s) with the appropriate word(s).