1995 年

Which of the following may represent the graph of $y=-x^2+3x+10$ ?

In an A.P., the sum of the first 2 terms is 3 and the sum of the first 3 terms is 2. The common difference is

If the geometric mean of two positive numbers $a$ and $b$ is 10, then $\log a+\log b=$

The marked price of a toy is $\$120$ and the percentage profit is $60\%$. If the toy is sold at a discount of $20\%$, the profit is

In the figure, $O$ is the centre of the circle. Find the area of the major segment $ABC$.

In the figure, $C_1$ and $C_2$ are two circles. If area of region I : area of region II : area of region III $=2:1:3$, then radius of $C_1$ : radius of $C_2=$

In the figure, $DE=DB$, $AC=13$ and $BC=5$. Area of $\triangle ADE$ : Area of $\triangle ACB=$

If $0^\circ\le x\le 360^\circ$, the number of points of intersection of the graphs $y=\sin x$ and $y=\tan x$ is

The figure shows the graph of the function

In the figure, $ABCDEFGH$ is a cuboid. $\tan\theta=$