How many types of R objects are present in R data type?

Which of this programming language is a dialect of R?

In R the following are all atomic data types EXCEPT!

What is the class of the object defined by x <- c(4, TRUE)?

Suppose I have a list defined as x <- list(2, "a", "b", TRUE). How can I fetch character vector "b" from the list?

x <- 1:4 , y <- 2:3, x+y = ?

To extract first two rows from data frame, we do

cube <- function(x, n) {

x^3

}

What is the output of the above function? If called using

cube(4)

Consider the following function

f <- function(x) {

g <- function(y) {

y + z

}

z <- 4

x + g(x)

}

If I run in R:

z <- 10

f(3)

What is the value of y?

x <- 5

y <- if(x < 3) {

NA

}

else {

10

}