There are 3 cocks and 5 white rabbits in the cage. There are () heads and () feet in the cage.

3. Two cats caught two mice in two days, so it takes () cats to catch 10 mice in one day.

The yellow line is twice as big as the red line, the red line is twice as big as the blue line, the blue line is twice as big as the black line, and the yellow line is twice as big as the black line.

There are 42 oranges in the basket. If you take out at least () oranges, they will be distributed to 8 students equally. If you add at least () oranges, you can put them on an average of 9 plates.

6. Jia Jia has three coats, two skirts and two trousers, and there are () different ways to wear them.

7. A monkey is playing in the tree. Suddenly, he saw a moon in the water, so he found a rope and prepared to catch the moon. It folded the rope in half and then in half, and finally twisted it into a 6-meter-long rope, just enough to reach the water. This rope used to be () long.

8. There is a 5-meter-high bamboo pole and a naughty little snail, climbing to the top of the bamboo pole. It climbs 3 meters down during the day and 2 meters up at night. The little snail won't climb to the ground until the first day.

9. A standard oil drum weighs 7 kilograms. Uncle Ma, the driver, has used half of the oil, and now the barrel weighs 4 kilograms. There is () oil in the bucket.

10, there are 6 students in senior two, less than those in senior three. 12, there are () students in senior three, and the number of students in senior three is () times that of senior two.