This post gives the answer to last week’s Problem of the Week. First of all, I have to admit that this problem actually came from the Quicker Maths blog. This blog actually pulled the problem from IBM’s Ponder this section. First of all, in order to write the equation algebraicly, Read more…
Did you know that 882 + 332 = 8833? How about the fact that 9902 + 1002 = 990100? That is pretty interesting, huh? My question for you all is, are there any two 4-digit numbers with this same relationship? In other words, are there two 4-digit numbers which when Read more…
If you remember the problem, the key is the fact that the problem never said to choose one of the answers from the multiple choice list. Also, the question never said that that question was the one that applied to the multiple choice questions. Having those two facts in mind, Read more…
Have you ever had a column text for which you wish you could easily create links? For example, let’s say that you have a column of search words (or phrases) that should link to the Google page for each search. How would you do it? First of all, you would Read more…
This Problem of the Week will make you question whether or not multiple choice questions really are easier. Here is the question: Assuming the answer can be selected from the following list, if you were to choose one of the following at random, what is the chance that you would Read more…
One of the things that you often have to learn early on in school after multiplication and division is how to find the GCD (Greatest Common Divisor) of two numbers. It is possible that you know the GCD as the GCF (Greatest Common Factor) or the HCF (Higest Common Factor). Read more…
One of the first things that many people learn in an introduction to Computer Sciences course is the algorithm for calculating the square root of a number. The algorithm, which is often attributed to Heron of Alexandria, is as follows: Formulate a guess. Multiply that guess by itself. If the Read more…
One thing that is not extremely obvious in JavaScript is how you sort arrays. Yes, of course I know that arrays have the native sort() function, but did you know that the following will incorrectly sort the array of numbers: How crazy is that? Even though the array is in Read more…
One of the many things that you may need to become accustomed to using is some type of versioning system. One type that I use on a regular basis is SVN. Last month, due to an audit, we had to get a spreadsheet or CSV file that contained all of the records Read more…
As of JavaScript 1.8, a new prototypal function for the Date objects has been added: toISOString(). Ordinarily this returns a string similar to the following: The problem is that not all browsers support JavaScript 1.8 yet. For this reason, if you want to use this function regardless of the version Read more…