A coin has two sides a head(H) and a tail(T).
∴ All possible outcomes are H, T.
Total number of outcomes = 2
Chances of getting a tail = 1
Probability (P) = \(\frac{Number\,of\,favorable\,outcomes}{Total\,number\,of\,outcomes}\)
∴ Probability of getting a tail P(T) \(\frac{Number\,of\,getting\,a\,tail}{Total\,number\,of\,outcomes}\) = \(\frac{1}{2}\)