Rule of 72 অনুযায়ী ৯% বার্ষিক সুদের হারে ৫ লক্ষ টাকা কত বছরে ১০ লক্ষ টাকা হবে?

Question:

Which of the following data structures operates strictly on a Last-In, First-Out (LIFO) principle?

Options:

        
• A) Queue
        
• B) Stack
        
• C) Array
        
• D) Binary Search Tree
    

Correct Answer: Option B (Stack)

Detailed Explanation:

A Stack is a linear data structure that follows the LIFO (Last-In, First-Out) principle. The element inserted last is always the first one to be removed. Common real-world analogies include a stack of plates or undo functionality in text editors. The primary operations are push() (adding an element) and pop() (removing the topmost element).

Analysis of Incorrect Options:

        
• Option A (Queue): Operates on a FIFO (First-In, First-Out) basis, where the first element inserted is the first one to be removed.
        
• Option C (Array): Provides random access to elements using an index, without imposing a strict insertion/removal sequence.
        
• Option D (Binary Search Tree): A non-linear, hierarchical data structure organized for logarithmic search and retrieval, not constrained by LIFO order.