With the end of the 20 17 college entrance examination mathematics subject, what parents and candidates want most is the answers to the college entrance examination mathematics questions. Here, I will provide you with the questions and answers of the 20 17 Shandong college entrance examination liberal arts mathematics paper for parents and students' reference. I wish the college entrance examination students good results this year.

(2) It is known that I is an imaginary unit. If the complex number satisfies zi= 1+i, then z? =

A.-2i B.2i C.-2 D.2

The answer to this question is a.

(8) The stem and leaf diagram as shown in the figure records the output data (unit: pieces) of five workers in each group of A and B on a certain day. If the median of the two sets of data is equal and the average is equal, the values of x and y are respectively

A 3,5b5,5c3,7d5,7

The answer to this question is a.

(16) (the full score of this small question is 12)

A tourist plans to travel in three Asian countries A 1, A2 and A3 and two of three European countries B 1, B2 and B3.

(i) If you choose two of these six countries, find the probability that both countries are Asian countries;

(2) If 1 is selected from Asian countries and European countries, find the probability that these two countries contain A 1 but not B 1.

The above questions and answers are part of the 20 17 Shandong liberal arts mathematics test paper, for reference only.