Answer with explanation:
It is given that:
A box contains 2 blue cards numbered 1 through 2, and 3 green cards numbered 1 through 3.
Now let B1 represent the blue ball numbered as 1.
and B2 represent the blue ball numbered as 2.
G1 represent the green ball numbered as 1.
G2 represent the green ball numbered as 2.
G3 represent the green ball numbered as 3.
Sample space--
It is the collection of all the outcomes that are obtained while performing a experiment.
The sample space of picking a blue card followed by a green card are:
(B1,G1) (B2,G1)
(B1,G2) (B2,G2)
(B1,G3) (B2,G3)