Elance Exams Answers PDF file

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Download PDF file of elance Zoho Creator Exam Answers
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What is the result of command: z <- c(1:3,NA); ind <- is.na(z); z ?

the row vector [1 2 3 FALSE]
the row vector [1 2 3 NA]
the row vector [TRUE TRUE TRUE FALSE]
the row vector [FALSE FALSE FALSE TRUE]
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