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a. In calculus there is usually only one correct answer to a problem but in manufacturing there are usually many ways to make a part. Discuss the statement. b. Write typical composition of major forms of iron identifying the primary furnace(s) used in production of each of them (in bulk). Also, give the classification of carbon steels based on the percentage carbon content. c. List the various sheet metal shearing operations. Explain briefly any four of these operations using a diagram. d. Give the classification of forging processes. Draw a schematic diagram of impression die forging labelling its