Given the shown diagram
(a) How many outcomes are there?
Since we have 3 presidents and 4 vicepresident the total outcomesis given by
we have a total of 12 outcomes
(b) How many outcomes have both Linda and Bob being chosen?
Linda and Bob share just 1 outcome
then
1 outcome Linda and Bob both being chosen
(c) How many outcomes have Maria or Ann being chosen?
Maria has 4 outcomes
Ann has 4 outcomes
then
8 outcomes of maria OR Ann being chosen