Q$1.$ Define data structures in R with suitable examples

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Q$2.$Which of the following are vectors?

A$.$ V$1=$ c$($TRUE$,$ FALSE,FALSE, TRUE$)$

B$.$ V$1=$ c$(45$L$,65$L$,35$L$,67$L$,11$L$)$

C$.$ V$1=$ c$(34\mathrm{.}5,23\mathrm{.}45,5\mathrm{.}416187)$

D$.$ V$1=$c$(3+7$i$,8$i$,2+3$i$)$

E$.$ All $4$ are vectors$$

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Q$3.$ Dataframe can ONLY hold objects of the same class. Choose the correct option

A$.$ TRUE

B$.$ FALSE $$

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Q$4.$ Consider the following R command and give the correct interpretation

$>$ array$1[-(2$:$4),,]$

Choose the correct option from below

A$.$ Access all rows from $2$nd$-4$th column of each matrix

B$.$ Access elements from all rows EXCEPT$2$nd$-4$th row from each matrix

C$.$ Access elements from all rows EXCEPT from $2$nd$-4$th column from each matrix

D$.$ Access all elements of $2$nd & $4$th matrices

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Q$5.$ Factors are R Objects that help you Create Categorical variables

A$.$ TRUE

B$.$ FALSE

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Q$6.$ Which of the following functions gives the$$descriptive statistics of a dataframe$-$mtcars$$

A$.$ str$($mtcars$)$

B$.$ summary$($mtcars$)$

C$.$ append$($mtcars$)$

D$.$ None of the above