The probability of the head event 'H' can be found by adding the probabilities of its sub-events, assuming these events are mutually exclusive. Therefore, the probability of event 'H' (P(H)) is calculated as: P(H) = P(A) + P(B) + P(C). Given P(A) = 0.05, P(B) = 0.01, and P(C) = 0.01, the combined probability is P(H) = 0.05 + 0.01 + 0.01 = 0.07 or 0.0700.