A quarter is tossed 3 times with 8 possible outcomes.  For example, HHT, where H=heads and T=tails.  a) List all 8 possible outcomes. b) List the outcomes constituting each of the following four events       A= event exactly two heads are tossed       B= event no heads are tossed       C= event first toss is tails       D= event all tosses come up the same

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