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    Question

    There are two stacks 1, and 2, such that stack 1 is to

    the west of stack 2. There are five shelves in each of the two stacks such that the bottommost shelf is numbered as 1 and the topmost shelf is numbered as 5. Each shelf contains different items among Laptop, Book, Toy, Basket, Medicine, Earbud, Monitor, Keyboard, Mouse, and Perfume, however not necessarily in the same order. Which item is on 3rd shelf in stack 1? Note: If an item is one/two/three items above/below another item, then they are in the same stack unless stated otherwise. If an item is above/below another item, then they are not necessarily in the same stack unless stated otherwise. If an item is adjacent to another item, then the shelf number for both the items is same unless stated otherwise. Statement I: Medicine is three shelves above Monitor. Keyboard is below Monitor. Keyboard is not in stack 1. Perfume is two shelves above Keyboard. Laptop is adjacent to Perfume. Book is above Laptop in different stack. Basket is two shelves below Earbud.Statement II: Toy is three shelves below Mouse. Laptop is below Mouse in the same stack. The question given below consists of two statements numbered I and II given below it. You have to decide whether the data provided in the statements are sufficient to answer the question. Read all the statements and answer the question.
    A Data given in statement I alone is not sufficient to answer the question while the data given in statement II alone is sufficient to answer the question. Correct Answer Incorrect Answer
    B Data given in statement I and II together is necessary to answer the question. Correct Answer Incorrect Answer
    C Data given in statements I and II together is not sufficient to answer the question. Correct Answer Incorrect Answer
    D Data given in statement II alone is not sufficient to answer the question while the data given in statement I alone is sufficient to answer the question. Correct Answer Incorrect Answer
    E None of the above Correct Answer Incorrect Answer

    Solution

    Medicine is three shelves above Monitor. Keyboard is below Monitor. Keyboard is not in stack 1. Perfume is two shelves above Keyboard. Laptop is adjacent to Perfume. Book is above Laptop in different stack. Basket is two shelves below Earbud. We get:

    Case 1

    Case 2:




    So, from clue 1, we get Laptop is on 3rd shelf in stack 1.

    So, data given in statement I alone is sufficient to answer the question.
    From statement II, Toy is three shelves below Mouse. Laptop is below Mouse in the same stack.

    Case 1:

    Image
    Case 2:

    Image


    So, from statement II alone, we cannot answer the above question. Therefore, data given in statement II alone is not sufficient to answer the question.

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