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Find the sample space S and the corresponding size n(S) for this experiment.
There are three cards marked X, Y, and Z in box A, and five cards numbered 1 to 5 in box B.
Two cards are chosen at random, one from box A and one from box B; the letter and number obtained are recorded.
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Pay attention on how I edited your original post to transform it from
random collection of words into normal mathematical text.
For this experiment, the sample space S consists of pairs S = { (L,d) },
where L is one of the three letters X, Y, or Z, and d is one of five digits 1, 2, 3, 4, or 5.
The number of elements in the sample space S is 3*5 = 15:
n(S) = 15.
All events in the sample space are equally likely hood, so the probability of each of the 15 elements of the sample space S is .
Solved, answered and explained.