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If the function in a console is.matrix(X) returns true then X can be considered as a _______

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If the function in a console is.matrix(X) returns true then X can be considered as a _______

(a) Matrix object

(b) Matrix data object

(c) Matrix vector

(d) Vector

This question was addressed to me by my school teacher while I was bunking the class.

This intriguing question comes from Functions topic in division Control Structures, Functions, Scoping Rules, Loop Functions and Debugging of R Programming

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Correct option is (b) Matrix data object

The explanation is: The function call is.matrix(X) returns TRUE then X can be termed as a matrix data object. R has a large number of in-built functions and also the user can create their own functions.

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