QUESTION 4: 4. Every day you get between 1 and [7 1m} emails. (a) If you consider (1]): + 4.) consecutive days. how many combinations of possible incom- ing emails per day are there (not total consider the quantity of emails as numbers}? Justify your answer. [2] (b) If you consider (ID; + 4] consecutive days, have many ways are there to get at least (ID, + 2] days with U {Dz} emails per day? Justify your answer. [3] For each question that has letters such as \"31 etc use the following: ID1=1 ID1=2 |Da=7 ID4=4 ID5=B ID5=B