Elements in a set following exercises do all work on a separate sheet of paper and turn it in. this directionscomplete the following exe practice sheet is due tuesday 07-30. 1. (a) if n(a) = 100, n( a b) - 20 and n(a 00, n( a b) - 20 and n( a b) - 150, what is n(b)? (b) if n(u) = 200 and n(aub) = 150, what is n( a b92 (c) if n(aub) = 500, n( ab ) = 200, n( a b) = 150, what is n( ab )? 2. if n( ab) = 150 and n( abc) = 40, what is n( abc)? 3. if n(a) = 200 and n( ab) = 40, n( abc) = 20, n(a and n( ab) = 40, n( ab9) = 20. n( ab) 50, what is n( abc)? 4. in a survey of 1000 households, 600 said they read the newspaper said they read the newspaper in print and online, and 100 said the newspaper turn page newspaper in print but not online, 300 and 100 said they did not read the
a. how many read the newspaper only online? b. how many read the newspaper at least one way?