Question -
Answer -
Since either coin can turn up Head (H) or Tail (T), are thepossible outcomes.
Here coin is tossed twice, then sample space is S = (TT, HH,TH, HT)
∴ Number of possible outcomes n (S) = 4
Let A be the event of getting at least one tail
∴ n (A) = 3
P(Event) = Number of outcomes favorable to event/ Totalnumber of possible outcomes
P(A) = n(A)/n(S)
= ¾