“Sara has 3books, and she loves her 2cats. She finds them cute and adorable. ”
Write the regular expression to get the set of all alphabetic strings. (Sara has books and she loves her cats She finds them cute and adorable)

	(a)	[a-zA-Z]*			(b)	[a-zA-Z]+
	(c)	\b[a-zA-Z]+			(d)	[a-zA-Z]?
	(e)	[A-Z]*			(f)	[A-Z]?

“Sara has 3books, and she loves her 2cats. She finds them cute and adorable. ”
Write the regular expression to get the set of all words starting with a number. (3books 2cats)

	(a)	[0-9][a-zA-Z]			(b)	[0-9][a-zA-Z]*
	(c)	[0-9]\w			(d)	[0-9][a-zA-Z]+

“Sara has 3books, and she loves her 2cats. She finds them cute and adorable. ”
Write the regular expression to get the set of all alphabetic strings excluding words that start with a number. (Sara has and she loves her She finds them cute and adorable)

	(a)	^[0-9][a-zA-Z]+			(b)	\w[a-zA-Z]+
	(c)	\b[a-zA-Z]+			(d)	[a-zA-Z]+

“Sara has 3books, and she loves her 2cats. She finds them cute and adorable. ”
Write the regular expression to get the set of all lowercase strings including only words that end with e.

	(a)	\b[a-z]*e\b			(b)	\b[a-z]*e
	(c)	\b[a-z]+e\b			(d)	\b[a-z]+e

“Chanel is not pronounced channel. 3 channels are we had back when cars were cheaper”
Write the regular expression to get only “Chanel”, “channel” and “channels” ignoring case of these words (only in this sentence as context)

	(a)	[cC]han[a-z]+			(b)	\b[cC]han[a-z]+
	(c)	chan[a-z]+			(d)	[cC]han\w+

Assume we are attempting to find the most common letter that words start with what regex expression would we use to preprocess the data?

	(a)	^[a-zA-Z]			(b)	^
	(c)	[^a-zA-Z]			(d)	^[^0-9]

Using the expression [tT]he to match all instances of the word the would yield:

	(a)	false positives			(b)	false negatives
	(c)	no matches			(d)	no errors

When negating within a regex, the caret is placed outside the square brackets.

	(a)	True
	(b)	False

The consequent effect of minimising false positives.

	(a)	Accuracy++			(b)	Accuracy–			(c)	Precision++
	(d)	Precision–			(e)	Recall++			(f)	Recall–

”Dial 199, for a bumpin’ gud time”, What would be the suitable expression to capture the hotline?
(Ignoring boundaries and spaces)

	(a)	[0-9]
	(b)	[0-9]+
	(c)	[0-9]*

Say we have a list of local IP addresses, and we wanna extract them from any given text containing them.
Given that ip addresses are within the range 192.162.1.0-255 (Choose the most correct)

	(a)	192\.162\.1\.[0-9]			(b)	192\.162\.1\.\d{1,3}
	(c)	192\.162\.1\.(\d{1,2}\b12˙—2[0-4]—˙25[0-5])—			(d)	192\.162\.1[0-9]