I chose B in question 1. I was wrong. I forgot the second question.

Throw a child with a uniform six-sided number (this word can't be played, it is used to play flying chess) twice. If the two numbers facing upward are m and n respectively, the probability that the image of quadratic function y = x 2+MX+n also has two different intersections on the X axis is.

5/ 12,4/9, 17/36, 1/2? Which 1?

I chose 17/36, which is C.

There are two concentric circles, four different points on the big circle and two different points on the small circle. How many different straight lines can be determined by six points?

6,8, 10, 12? Which question is 1? I chose 8, which is B.

Question 4: I choose A as the round question.

I chose D for the last question, just like you.