11. How many 5-person committees can be formed from a group of 6 women and 4 men, under each of the following conditions.
a) There are no conditions.
b) There must be exactly 3 women.
c) There must be exactly 4 men.
d) There can be no men.
e) There must be at least 3 men.

Match the following reasons with the statements given to create the proof. 1. do = ob, ao = oc sas 2. doc = aob given 3. triangle cod congruent to triangle aob vertical angles are equal. 4. 1 = 2, ab = dc if two sides = and ||, then a parallelogram. 5. ab||dc if alternate interior angles =, then lines parallel. 6. abcd is a parallelogram cpcte