I saw this on: http://kenscourses.com/tc101winter2015/2015/use-of-recursion-for-repetitive-algorithms-6/

Basically, recursion in computer science is a method where the solution to a problem is based on solving smaller instances of the same problem.

Recursion is multiplying n times n-1’s factorial f.e. if you choose 4 then the answer is 4×3! so its 4x3x2x1

Depends on the program you are writing, the if loop does or stops the desired task until what you programmed tells the program to do so.

While loop does a task as long as something happens to do that task, after that it stops.

A for loop can be combined with while but for a desired value the program does something.

Nest a conditional statement is an if statement inside an if statement. You basically make sure that your program knows between which and which values is the user input number.