Given the following sets:

{: is a color in the French tricolor (flag)}

{j:j is the color of an unlucky cat} {black, white, yellow} {I: cyan, yellow, magenta, black}

{the seven rainbow colors in mnemonic ROYGBIV} (a) How many pairs of sets are there from these five sets if order does not matter?

(b) Describe the pair-wise union between all of the sets. (c) Describe the pair-wise intersection between all of the sets. (d) What is the intersection of b, c, and d?