Answer:
Posttest
Explanation:
A loop in programming is the continuous execution of a specific task to a determined number of times with a given condition. It is a written line or lines of code that is logical coded to repeat execution for multiple but fixed number of time. There are majorly two types of loops in programming, they are,
1. Posttest loop statement.
2. Pretest loop statement.
The posttest loop statement is written to execute lines of code at least once, following a condition, for which it evaluates the condition after the code is executed.
The pretest loop statement also execute the code with a condition, but evaluates the condition before the code is executed.
Solution :
Here, we need to perform JOIN operation of the students and registration.
Use NATURAL JOIN operator 
and so no need to specify Join condition.
Also we need to selection operator tp select only those course whose major in "philosophy".
Finally we projection operator π to project only distinct students name who took at least three courses.
![$\pi [\sigma_{\text{student's nam}e} [ \sigma(\text{three courses}) \Join \text{"Philosophy"}]]$](https://tex.z-dn.net/?f=%24%5Cpi%20%5B%5Csigma_%7B%5Ctext%7Bstudent%27s%20nam%7De%7D%20%5B%20%5Csigma%28%5Ctext%7Bthree%20courses%7D%29%20%5CJoin%20%5Ctext%7B%22Philosophy%22%7D%5D%5D%24)
def writel(length, file_name = ""):
if file_name!="":
f = open(file_name, "w")
f.write(str(length))
f.close()
else:
print(str(length))
writel(3, "FileName.txt")
I hope this helps!
Remember, you must have the file created prior to running this program. Best of luck.
They could find you and throw hands.
Answer:
As aperture increases in f-stop values, the lens closes. On the other hand, when aperture decreases in f-stop values, the lens opens.
Explanation:<u><em>plz give brainlist</em></u>
