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_ 3. [-/4 Points] DETAILS HUNTERDM3 4.2.004A. MY NOTES Hugo and Viviana work in an office with nine other coworkers. Out of these 11 workers, their boss needs to choose a group of five to work together on a project. How many different working groups of five can the boss choose? 4. [l4 Points] HUNTERDM3 4.2.001. Arturo can have pizza for dinner on any four of the next eight days. How many different ways can he select the days on which to have pizza? 5. [-I4 Points] DETAILS HUNTERDM3 4.1.0123. MY NOTES The following problem refers to strings in A, B, ..., 2. How many four-letter strings are there that begin with X