Which of the following button classes do not exist? (check any that apply)

Which class is used to create a button group?

Which is not contextual class?

Which class adds zebra-stripes to a table?

Which of these list types exist in Bootstrap? (check any that apply)

Which class can be used to create a breadcrumb?

Which is not a default Bootstrap grid system class?

The typographic scale in Bootstrap is based on which Less variables:

How to create a progress bar using Bootstrap 3?

Correct way to create full-width layout with two columns ⅓ and ⅔ on all devices?

How to wrap series of buttons?