Flowchart symbols and logic

What is a flowchart?

The flowchart is a means of visually presenting the flow of data through an information processing systems, the operations performed within the system and the sequence in which they are performed.

Describe the basic flowchart symbols for;

With the decision making symbol (diamond) and the process symbol (rectangle), what are the rules for how many lines may enter and leave the symbol.

Only one flow line should come out from a process symbol

Only one flow line should enter a decision symbol, but two or three flow lines could leave as each flow line could be a possible answer

Study the sample flowcharts then create a flowchart for a coin toss where heads means Mary pays for the pizza and Tales means Bill pays.