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In a box of 50 markers, 30 markers are either red or black and 20 are missing their caps. If 12 markers are either red or black and are missing their caps, find the probability that a randomly selected marker is red or black or is missing its cap.
Positive Outcomes
Favorable results or consequences that result from specific actions or events.
Organisms
Living entities that can function autonomously, consisting of one or more cells.
Responses
Reactions or replies to stimuli or events, which can be physiological, emotional, or behavioral.
Behaviourism
A psychological approach that emphasizes the study of observable behaviors and their environmental determinants.
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