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Message: <blockquote data-quote="zanharjabir" data-source="post: 4541519" data-attributes="member: 56443">A supermarket chain is running a promotion called Lucky Shopper in the hope of attracting larger numbers of customers. Each day 1000 customer cash register dockets spread randomly across the supermarket chain are printed with a three digit number between 000 and 999. Each morning before trading commences a Lucky Docket number is generated. Each of the digits in the Lucky Docket number is generated randomly from the numbers between 0 and 9, independently of the other two digits.a.    What is the probability that the winning Lucky Docket number is 321?b.    What is the probability of a Lucky Shopper winning the lottery?c.    What is the probability that the winning number contains no 7s?d.    What is the probability that the winning number contains at least one 7?</blockquote>

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