Merits:
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Ans: Merits of recursion are: Mathematical functions, such as Fibonacci series generation can be easily implemented using recursion as compared to iteration technique. Demerits of recursion are: Many programming languages do not support recursion; hence, recursive mathematical function is implemented using iterative methods. Even though mathematical functions can be easily implemented using recursion, it is always at the cost of execution time and memory space. The recursive programs take considerably more storage and take more time during processing.
Appropriate mode for WHAT?
#Configure terminal for configuration mode #exit for previous mode #ctrl+z for set up mode
There is no specific symbol for the mode.
there is no mode, because no number is repeated, so the answer is :no mode