Reasoning scenario 42: A healthcare selection panel is testing formal inference, evidence appraisal and decision quality. The setting is a screening programme. Among 160 applications, 31 require check A, 30 require check B, and 8 require both. How many require A or B?

Reasoning scenario 42: A healthcare selection panel is testing formal inference, evidence appraisal and decision quality. The setting is a screening programme. Among 160 applications, 31 require check A, 30 require check B, and 8 require both. How many require A or B?

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