Shiming, Doreen, and Brian are studying independently for their driver’s license test. The probability Shiming will pass the test is 3/5, the probability Doreen will pass the test is 3/28, and the probability Brian will pass the test is 3/10. What is the probability at least one of these people passes the test?

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i think we can find probability for NONE of them will pass.
and subtract it from 1

probability for none of them passing = (1-3/5)(1-3/28)(1-3/10)

So it's 2/5 * 25/28 * 7/10?

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