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What will be the class of the vector if you concatenate a number and NA?

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What will be the class of the vector if you concatenate a number and NA?

(a) Number

(b) Character

(c) Integer

(d) No class

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Asked question is from Functions in portion Control Structures, Functions, Scoping Rules, Loop Functions and Debugging of R Programming

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Best answer
The correct choice is (a) Number

Best explanation: The class of the resulting vector if you concatenate a number and NA is a Number. Decimal values are also called numeric in R. It is the default computational data type in R language.

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