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.class1{ background-color: 'green'; } The full-stop before the text indicates that this css rule applies to a class with the name 'class1'.Inside the rule, the background-color attribute is given a value ...

We will do this in 2 steps to make it easier to understand. Firstly, we need to obtain the actual <p> element with javascript. To do this, we use the following command:var p = document.getElementByI...

4^(n)-1 factors to (2^(n)-1)(2^(n)+1) by difference of two squares by definition of a prime (only has factors 1 and itself (given that itself isn't 1))So Exactly one of the brackets should = 1 for 4^(n)-1...

for x in range(1,8) : print(x) The range(1,8) function gives us an array of numbers from 1 to 7. The number on the right is the upper bound of the numbers which is why only 1 to 7 is returned.From here, a...