Reasoning scenario 106: A healthcare selection panel is testing formal inference, evidence appraisal and decision quality. The setting is a screening programme. Among 153 applications, 33 require check A, 47 require check B, and 20 require both. How many require A or B?

Reasoning scenario 106: A healthcare selection panel is testing formal inference, evidence appraisal and decision quality. The setting is a screening programme. Among 153 applications, 33 require check A, 47 require check B, and 20 require both. How many require A or B?

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