Question 1139615
Chances of winning with one ticket:
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3/100 * 2/99 * 1/98 = 1/161700
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Chances of NOT winning with 24 tickets:
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(161699/161700)^24 = 0.99985
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Therefore, Jack's chances of winning with 24 tickets is: 1 - 0.99985...or 0.00015.  That's about a 1 in 6667 chance.