In Java Write a program using recursion to display all valid (i.e. properly open and closed) combinations of n-pairs of parentheses.

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A: Introduction: Below describe  Remove the left recursion from the productions: S ->A a |b A ->A…

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A: Given: Give a recursive definition for the set of all strings of a’s and b’s where n a’s followed by…

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Q: 14 T OR F Recursive methods are always shorter and clearer than the equivalent nonrecursive methods.

A: Recursion is a process of calling the same function itself

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Computational Systems

The computation systems can be defined as the systems that are capable of solving a problem that includes calculations either mathematical or logical, and are able to produce the result as an output. For example, a simple calculator that is given a set of numbers and operators as input and produces the result as an output can be defined as a computational system. The above example is a simple illustration only, the computational systems range from simple devices to complex devices such as the systems that control the SpaceX companies, Starlink satellites which are being quite recently seen in the skies at many places globally.