I want correct answer. Unnecessarily dont waste my post. I will downvote for incorrect. =1. Starting with theempty stack, suppose we push the first n naturalnumbers in sequence, and then perform n...

I want correct answer. Unnecessarily dont waste my post. I will downvote for incorrect.

Extracted text: Let s be a stack of size n>=1. Starting with the empty stack, suppose we push the first n natural numbers in sequence, and then perform n pop operations. Assume that Push and Pop operations take X seconds each, and Y seconds elapse between the end of one such stack operation and the start of the next operation. For m>=1, define the stack-life of m as the time elapsed from the end of Push(m) to the start of the pop operation that removes m from s. The average stack-life of an element of this stack is ?