In Basic D&D, the default way to find a trap is to roll 1d6 and if you get 1 you find it. But thieves have a special % of finding it: e.g., a first level thief has 10%. Should we roll this % ...
In the Basic Rulebook for D&D, on page B19, it states that characters can move 120' in a dungeon per turn (10 minutes). Later it states that this movement assumes players are mapping carefully, ...