Question: If the probability that student A will fail a certain statistics examination is 0.5, the probability that student B will fail the examination is 0.2,

If the probability that student A will fail a certain statistics examination is 0.5, the probability that student B will fail the examination is 0.2, and the probability that both student A and student B will fail the examination is 0.1, what is the probability that at least one of these two students will fail the examination?

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