# Student name 1:
# Student name 2:
# Comments (e.g, known bug, questions you would like Dr. Cao to go through during class, etc): 

# the following pair-program is due at the beginning of next class
#1.Run the following code in the R console:
n <- 1000
x <- seq(1,n)
sum(x)
#Based on the result, what do you think the functions seq and sum do? You can use the help system.


#2. Finish the following code:
c1 <- "Hello World"         # this is character object
c2 <- "DATA 133"            # this is also character object
c3 <- 100                   # this is numeric object
# Define a new vector V12 that contains c1, c2 and c3 (Hint: use c function here)

# Define a new list L12 that contains c1, c2, and c3

# Update V12 by adding a new element 100 at the end

# Update the first element of V12 to "Great"

# Print the output of multiplication of 10 and third element in V12

# Get the substring "Hello" from the first element of list L12 and print it out