Elance Exams Answers PDF file

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Download PDF file of elance Zoho Creator Exam Answers
elance-zoho-creator-exam.pdf

Given this named vector "X": > X <- c( 5, 10, 1, 20 ); > names( X ) <- c( "a", "b", "c", "d" ); Which operation is valid to show the 2nd and 4th components of X?

X[ "b", "c" ]
X[ ,c( 2, 4 ) ]
X[ c("b","c") ]
X[ 2, 4 ]
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