Reasoning scenario 170: A healthcare selection panel is testing formal inference, evidence appraisal and decision quality. The setting is a screening programme. Among 146 applications, 35 require check A, 64 require check B, and 19 require both. How many require A or B?

Reasoning scenario 170: A healthcare selection panel is testing formal inference, evidence appraisal and decision quality. The setting is a screening programme. Among 146 applications, 35 require check A, 64 require check B, and 19 require both. How many require A or B?

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