2002 年

In the figure, the equation of the straight line $L$ is

In the figure, the area of $\triangle ABC$ is

The pie chart below shows the expenditure of a family in January 2002. The percentage of the expenditure on Rent was

For the five numbers $x$, $x-1$, $x-2$, $x$, $x+8$, which of the following must be true? I. The median is $x-2$. II. The mean is $x+1$. III. The mode is $2$.

Two numbers are drawn randomly from five cards numbered $3$, $4$, $5$, $6$ and $7$ respectively. Find the probability that the product of the numbers drawn is even.

In a test, there are two questions. The probability that Mary answers the first question correctly is $0.3$ and the probability that Mary answers the second question correctly is $0.4$. The probability that she answers at least one question correctly is

$1-\dfrac{2x}{x-\dfrac{1}{x}}=$

The remainder when $x^2+ax+b$ is divided by $x+2$ is $-4$. The remainder when $ax^2+bx+1$ is divided by $x-2$ is $9$. The value of $a$ is

If $(x+1)(\sqrt{3}-1)=4$, then $x=$

If $\log x^2=\log 3x+1$, then $x=$