Question

What is the set of strings that contain the substring 'bboa'?

Answer 1

The set of strings that contain the substring 'bboa' can be represented by the regular expression /.*bboa.*/.

Step-by-step explanation:

The set of strings that contain the substring 'bboa' can be represented by the regular expression /.*bboa.*/. This regular expression matches any string that has 'bboa' as a substring. Here's a breakdown of the regular expression:

1. / - indicates the start of the regular expression pattern.
2. .* - matches any sequence of characters (except newlines).
3. bboa - matches the substring 'bboa' exactly.
4. .* - matches any sequence of characters (except newlines) after the substring 'bboa'.
5. / - indicates the end of the regular expression pattern.

For example, the strings 'abboa', 'bbbboa', and 'cbbbcbbboab' all match the regular expression and belong to the set of strings that contain the substring 'bboa'.