l. a- Identify the formula, presented in one of In}; lectures and in in): lecture notes, that can he used to calculate the total number of distinct relativeprices in an economy. Then use the formula to calculate this number for the classroom economy. (Hints: See page 13 of In}: lAB lecture notes. Hon.r many different items are traded?) 1:. List the distinct pairs of goods that can he traded for each other. Verify that the number of distinct pairs is equal to your answer to Part a of this question. Hint: For distinct pairs: the order of the goods listed doesn't matter. If we thin]: of juice and dget spinners as a pair of goods then frdget spinners and juice are not another distinct pair- But juice and Mud-{Ms could be another distinct pair.) Report the distinct pairs like this: IE and F5. W and IE5, etc