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Assignment # 15 i. What purpose is served by the output devices of an accounting system? ii. When special journals are used, they are usually used to record each of four different types of transactions. What are these four types of transactions? iii. What notations are entered into the Posting Reference column of a ledger account? iv. When a general journal entry is used to record sales returns, the credit of the entry must be posted twice. Does this cause the trial balance to be out of balance? Explain. V. Describe the procedures involving the use of copies of a company's sales invoices as a sales journal