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If 'table' is 'chair', 'chair' is 'pen', 'pen' is 'book', then what is used for writing?
Table
Chair
Pen
Book
Book
In substitution coding, first identify the actual object used for the action (pen for writing), then find what that object is coded as in the given sequence.
In substitution coding, first identify the actual object used for the action (pen for writing), then find what that object is coded as in the given sequence.
Identify the real-world object
In real-world usage, a 'pen' is the object used for writing.
Apply substitution rule
The problem states 'pen is book'. Therefore, the object that functions as a pen (which is used for writing) is now referred to as 'book'.
A: Table is the object replaced by chair, not related to writing. B: Chair is the object replaced by pen, but chair itself is not used for writing. C: Pen is the tool used for writing, but in this coded language, it is identified as a book.
D is correct because the real-world tool for writing is a pen, and the problem explicitly defines 'pen' as 'book'.
Watch for the direction of substitution: 'A is B' means A becomes B. Always find the original entity first, then look for its assigned code.