gaokao 2025 Q2

gaokao · China · national-I_eol 5 marks Probability Definitions Set Operations

Let the universal set $U = \{1,2,3,4,5,6,7,8\}$, and set $A = \{1,3,5\}$. The number of elements in $C_U A$ is
A. $0$
B. $3$
C. $5$
D. $8$

Let the universal set $U = \{1,2,3,4,5,6,7,8\}$, and set $A = \{1,3,5\}$. The number of elements in $C_U A$ is\\
A. $0$\\
B. $3$\\
C. $5$\\
D. $8$