The results of a class's Chinese test paper are all integers, with a minimum score of 82. It is known that at least four students in the class have the same score. How many students are there in this class?

The results of a class's Chinese test paper are all integers, with a minimum score of 82. It is known that at least four students in the class have the same score. How many students are there in this class?

95-82+4=17

How many of the ten cards 1, 2, 3, 4, 5, 6, 7, 8, 9 and 10 can guarantee both odd and even numbers?

6 sheets

1. Put a piece of conical metal with a bottom diameter of 40cm into a cylindrical glass with a bottom diameter of 80cm. The height of the water surface in the glass is 3cm. What is the height of the metal? 2. Immerse a conical metal casting in a square container with an edge length of 10cm. At this time, the water surface of the square container is 6cm higher than that of the original container, which only weighs 7.8G per cubic centimeter?

1,40 divided by 2 = 20,20 * 20 = 400400 * 3.14 * 3 = 3768
2.10*10*8*7.8=6240