factor can be all numbers from 2 to number that we check if number % factor == 0 if it is equal to zero, we check again with number // factor ...

The Fibonacci sequence appears in nature all around us, in the arrangement of seeds in a sunflower and the spiral of a nautilus for example. The Fibonacci sequence begins with fibonacci(0)=0 and ...

Four-digit numbers can be partitioned into ones, tens, hundreds and thousands. Understanding the value of each digit makes it easier to compare numbers using the less than (<), greater than (>) and ...