41.
Which type of comment is not supported in R?

42.
What is the usage of the keyword ? in R?

44.
Which of the following is the assignment operator?

45.
Which of the following is a loosely-typed language?

46.
What is the limit to matrices in R?

47.
Which is the function used to add the vectors?

48.
Which of the following list contains multiple data types?

49.
Which function is used to create data frames?

50.
What is the purpose of the method plot()?