Since there are multiple questions posted, we will answer first question. If you want any specific question to be answered, then please submit that question only or specify the question number in your message.
Examples of a real-world scenario that involves a sequence:
1.Weather forecasting: This is the observations about the weather over time, predict the expected weather tomorrow.
2.Stock market prediction: This is the act of trying to determine the future value of a company stock or other financial instrument traded on an exchange.
3.Interest and loan: The interest portion of monthly payments made to pay off an automobile or housing loan or car loan.