91. What will be the output of the following R code?
> x <- c(1, 2, NaN, NA, 4)
> is.na(x)
> x <- c(1, 2, NaN, NA, 4)
> is.na(x)92. Accessing elements is achieved through a process called . . . . . . . .
93. A . . . . . . . . is an R-object which can contain many different types of elements inside it.
94. Data frames can be converted to a matrix by calling data . . . . . . . .
95. On what basis of a variable, OS allocates memory and decides what can be stored in the reserved memory?
96. Which is more general than a matrix, in that different columns can have different modes?
97. What will be the output of the following R code?
> x <- c("a", "b", "c")
> as.logical(x)
> x <- c("a", "b", "c")
> as.logical(x)98. Lists can be created using the . . . . . . . . function.
99. Joining two lists can be achieved either using the . . . . . . . . function.
100. R objects can have attributes, which are like . . . . . . . . for the object.
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