In order to speed up the development of tourism, Xinyu City issued 2 million "Fairy Lake Tour" discount cards to people outside the province on 20 13.

Question analysis: (1) According to the meaning of the question, the number of gold card holders in a 36-person tour group is:? ,

The number of people holding the silver card is as follows: (1) The classical probability can interview two tourists randomly in the group and find out the probability that exactly 1 person holds the silver card;

(2) The event of "two tourists in the random interview group, the number of people asking for a gold card is equal to the number of people holding a silver card" can be regarded as the sum event of two mutually exclusive events, namely "two tourists in the random interview group, neither of whom holds a discount card" and "two tourists in the random interview group, one of whom holds a gold card and one holds a silver card", and then the classical probability is used.

Problem analysis: (1) According to the meaning of the question, there are 27 tourists from outside the province, 9 of whom hold gold cards; There are 9 tourists in the province, 6 of whom hold silver cards.

Let event A be "Interview two members in the group, and just 1 member holds the silver card". 1 point

rule

So what is the probability that 1 person holds a silver card when interviewing two people in the group? 6 points

(2) Let event B be "interviewing 2 members of the group, and the number of gold cards is equal to that of silver cards", which can be divided into:

Event B 1 is "interview two group members, 0 with gold card and 0 with silver card", or event B 2 is "interview two group members, 1 with gold card and 1 with silver card", then

So what is the probability that the number of gold card holders and silver card holders is equal when interviewing members of two groups? 12 point