Quiz — Nested arrays

An array of arrays keeps the temperatures measured on four days, three readings per day:

my @data =
    [1.2, 2.3, 3.4],
    [4.5, 5.6, 6.7],
    [5.6, 6.7, 7.8],
    [6.7, 7.8, 8.9];

Single elements

What do you expect to see in the output at each of the following lines of code?

Select the correct Boolean result of the following comparisons.

False	`@data[0][0] == @data[2][2]` is (: False, True :)
True	`@data[1][1] == @data[2][0]` is (: False, True :)

What value do the following calls of the elems method return?