The probability of A and D is 0.3.
Probability is possibility, that "deals with occurrence of random event" .
According to the question,
The tree diagram represents an experiment consisting of two trials while tossing a coin one is 'A' represents Head and 'B' represent Tail.
If you toss a coin twice we get (A,C) = (Head, Head), (A,D) = (Head, Tail)
(B,C) = (Tail, Head), (B,D) = (Tail, Tail).
Probability of getting head and tail = (0.5)(0.6) = 0.3.
Hence, the probability of getting head and tail is 0.3.
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