At the Time of Barack Obama S Presidency, There Have $14$

At the time of Barack Obama s presidency, there have been 44 presidents of the United States. In order to help you answer the question below, draw a Venn diagram showing the following facts about where each served before assuming the presidency. $14$ were vice-president. $6$ were VP and served in the Senate. $16$ served in the Senate. $2$ were VP and held a cabinet post. $8$ held a cabinet post. $4$ served in the Senate and held a cabinet post. $1$ was VP, in the Senate, and held a cabinet post. How many presidents served only as vice-president before becoming president? __________ president(s)