Mei puts the polygons at right into a bucket and asks Brian to pick one.

1. What is the probability that he pulls out a quadrilateral with at least one pair of parallel sides?

   Step 1(a):

   Identify the shapes that are quadrilaterals with a $Q$.

   

   Step 2(a):

   Identify the shapes that have parallel sides with a $P$.

   

   Step 3(a):

   Write a fraction where the numerator is the number of shapes that have both parallel sides and four sides, and where the denominator is the total number of shapes.

   Answer (a):

   $\frac{3}{6}=\frac{1}{2}$

2. What is the probability that he pulls out a polygon with rotation symmetry?