Using it's concept, it is found that the probability of three events, U, V and W happening together is of [tex]p = \frac{1}{16}[/tex].
A probability is given by the number of desired outcomes divided by the number of total outcomes.
In this problem, the intersection of the events is choosing the letter A(which is a vowel in the word apple, and one of the cards A, B, C or D), which is one out of 16 letters, hence:
[tex]p = \frac{1}{16}[/tex].
More can be learned about probabilities at https://brainly.com/question/14398287
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