The following conditions apply to a multiple bet:

(a) the bet is determined when the first relevant race is lost;

(b) if the bet is in respect of competitors entered in more than one race being held on the same day, the bookmaker must write or otherwise clearly indicate on the reverse side of the relevant betting ticket the names of the particular races selected by the bettor;

(c) if one or more of the competitors backed by the bettor is scratched or withdrawn before the first relevant race starts, the bet is void;

(d) if a competitor backed by the bettor is scratched after the running of the first relevant race, the bet is on the remaining competitor or competitors backed by the bettor at starting price;

(e) if none of the competitors backed by the bettor starts in the relevant races, the bet is void.