# Create two numeric vectors.
> x <- 1:5
# An equivalent form is: x <- c(1:5).
> y <- 6
# Remember that the : symbol, when used with numbers, is the sequence operator.
# It tells R to create a series of numbers increasing by 1.
# Equivalent to this is x <- c(1,2,3,4,5)
# Let's sum both vectors.
# 6 is added to all elements of the x vector.
> x + y
[1] 7 8 9 10 11
# Let's multiply x by itself.
> x * y
[1] 6 12 18 24 30