Probability
# Discrete Mathematics Warmups

There are 3 flights from California to France, and 2 flights from France to India. Sanjeet wants to fly from California to France and then to India.

How many choices does he have for his flight plan?

28,000 people read *NanJing Morning News*,

23,000 people read *NanJing Evening News*, and

4,000 people read both.

How many people read neither?

Katie is teaching a class of thirty pupils, of which fourteen are girls. She knows that there are twenty-two pupils who are right-handed.

What is the minimum number of girls who are right-handed in this class?

How many triangles are there in the diagram above?