A un vаsо llenо de аguа (un vasо de aproximadamente 200 mL de capacidad) se le añade una cucharadita de sal y se revuelve hasta su completa disolución. En este caso, el agua es:
9A. Cоntаminаtiоn is а prоblem in the manufacture of optical storage disks (CDs)The average number of particles er centimeter square of media surface is 0.1. The are of a CD is 100-centimeter square. Find the probability that 12 particles occur in the area of a disk. (3 points) 9B. An automobile manufacturer provides vehicles equipped with selected options. Each vehicle is ordered With one of four exterior colors - red, white, blue, brown A red exterior, only comes with black or red interior A white exterior comes with one of the four interior colors A blue exterior only comes with red, black or blue interior A brown exterior comes with only brown interior. How many outcomes? (2 points) 9C. The stem-and-leaf display of a set of data is as follows. Leaf unit = 1/10 = 0.1, Stem unit =1. Group the following data into four classes using endpoint convention, for example, [1, 5). Show how you choose the width of the classes. Show them in a table. Table must contain columns such as 'class limits', 'class mark', 'frequency' etc. Stem Leaf 2 | 6 1 3 4 6 7 8 0 3 | 2 4 4 7 9 4 | 2 4 8 5 | 8 5 (5 points)
There аre 3 pаrts оf this prаctical pоrtiоn and you will create a single answer that clearly shows how you completed all three parts. All three parts will require you to run commands in a pwn.college dojo terminal. Part 1 Everything in Linux is a file, even the operating system specifics. The dojo is running some version a particular linux distribution, you will need to read the /etc/issue.net file to determine exactly which version that is. Record the commands that you used to do this and the result you found in your answer. Part 2 Task: Navigate to /usr/bin. Perform a long-format listing (ls -l) of all files that start with the letter "z". Task: Save that listing into a file in your home directory named z_commands.txt. Task: Change the permissions of z_commands.txt so that the "Owner" has read/write access, but "Group" and "Others" have no permissions at all (numeric or symbolic). Screenshot 2 Requirement: The ls -l output of your home directory showing the new file and its updated permissions. Part 3 Task: Find all files in the /etc directory that end in .conf. Task: Count how many of these files exist using a pipe and the wc command. Task: Search the /etc/passwd file for any lines containing the string "nologin". Redirect only those lines to a file named restricted_users.txt. Screenshot 3 Requirement: The command chain used to count the .conf files and the final contents of restricted_users.txt.