gaokao 2019 Q6

gaokao · China · national-I-science_gkztc Combinations & Selection Combinatorial Probability

6. In ancient Chinese classics, the ``Book of Changes'' uses ``hexagrams'' to describe the changes of all things. Each ``hexagram'' consists of 6 lines arranged from bottom to top, with lines divided into yang lines ``——'' and yin lines ``——'', as shown in the figure. If a hexagram is randomly selected from all hexagrams, the probability that it has exactly 3 yang lines is
A. $\frac { 5 } { 16 }$
B. $\frac { 11 } { 32 }$
C. $\frac { 21 } { 32 }$
D. $\frac { 11 } { 16 }$

In the ancient Chinese classic ``I Ching'', the concept of ``hexagrams'' is used to describe the changes of all things. They are divided into ``yang'' represented by ``—'' and ``yin'' represented by ``- -''. The figure on the right shows a hexagram. The probability that a randomly selected hexagram has exactly five yang lines is

6. In ancient Chinese classics, the ``Book of Changes'' uses ``hexagrams'' to describe the changes of all things. Each ``hexagram'' consists of 6 lines arranged from bottom to top, with lines divided into yang lines ``——'' and yin lines ``——'', as shown in the figure. If a hexagram is randomly selected from all hexagrams, the probability that it has exactly 3 yang lines is\\
A. $\frac { 5 } { 16 }$\\
B. $\frac { 11 } { 32 }$\\
C. $\frac { 21 } { 32 }$\\
D. $\frac { 11 } { 16 }$

Paper Questions

Q1 Q2 Q3 Q4 Q5 Q6 Q7 Q8 Q9 Q10 Q11 Q12 Q13 Q14 Q15 Q16 Q17 Q18 Q21 Q22 Q23