List creation in R Programming - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to create a list with numbers 1 to 5.

R Programming

my_list <- [1](1, 2, 3, 4, 5)

Drag options to blanks, or click blank then click option'

Aarray

Bc

Cvector

Dlist

Attempts:

3 left

💡 Hint

Common Mistakes

Using list() creates a list but not a simple vector of numbers.

Using vector() requires specifying the type and length.

The c() function combines values into a vector or list in R.

2fill in blank

medium

Complete the code to create a list with elements 'apple', 'banana', and 'cherry'.

R Programming

fruits <- [1]("apple", "banana", "cherry")

Drag options to blanks, or click blank then click option'

Alist

Barray

Cvector

Dc

Attempts:

3 left

💡 Hint

Common Mistakes

Using list() creates a list but the question expects a vector.

Using vector() requires specifying the type and length.

The c() function combines character elements into a vector.

3fill in blank

hard

Fix the error in the code to create a list with numbers 1, 2, and 3.

R Programming

numbers <- [1](1, 2, 3)

Drag options to blanks, or click blank then click option'

Ac

Blist

Cvector

Darray

Attempts:

3 left

💡 Hint

Common Mistakes

Missing commas between elements causes syntax errors.

Using list() is valid but the question asks to fix the error in this code.

The elements must be separated by commas inside c().

4fill in blank

hard

Fill both blanks to create a list of numbers from 1 to 5 and check its length.

R Programming

my_list <- [1](1, 2, 3, 4, 5)
length_of_list <- [2](my_list)

Drag options to blanks, or click blank then click option'

Ac

Blength

Clist

Dsize

Attempts:

3 left

💡 Hint

Common Mistakes

Using list() instead of c() changes the data structure.

Using size() is not a valid function in R.

c() creates the vector and length() returns its length.

5fill in blank

hard

Fill all three blanks to create a list of fruits, access the second fruit, and get the total count.

R Programming

fruits <- [1]("apple", "banana", "cherry")
second_fruit <- fruits[[2]]
total_fruits <- [3](fruits)

Drag options to blanks, or click blank then click option'

Ac

B2

Clength

Dlist

Attempts:

3 left

💡 Hint

Common Mistakes

Using 1 instead of 2 to access the second fruit.

Using list() instead of c() changes the data type.

Using size() instead of length().

c() creates the vector, indexing with [2] gets the second fruit, and length() returns the count.