The coin flip, the ultimate 50-50 choice, is actually a little biased. According to a Stanford study, even a fair coin is about 51 per cent likely to land on the same face it started on. And if you spin instead of flipping, even a slightly weighted coin is much more likely to land on its heavier side. (A spun penny lands tails-up 80 per cent of the time.) But there's a cool maths trick for getting a fair result from an unfair coin.

Throwing the perfect party requires more than good booze, pleasant music and tasty snacks. It requires the right number of people to develop the atmosphere you're after. This formulaic approach to party invites will help you host the biggest bash or the most charming of dinner parties.

Misusing statistics is one of the most powerful ways to lie. Normally, we teach you how to avoid misinterpreting statistics, but knowing how numbers are manipulated can help you spot when it happens. To that end, we're going to show you how to make data say whatever the hell you want to back up any wrong idea you have.

Just how likely does "probably" sound to you? To some people, "probably" means that something is practically locked in. To others, it means the likelihood of something happening is highly dubious. This graph assigns percentage values to a range of common phrases relating to probability. Turns out you should say "almost certainly" instead of "probably" if you want to minimise doubt.

According to a 2013 Yale study, when facts seem to contradict your political opinions, your brain will work so hard to protect your beliefs that you'll do worse at maths. And surprisingly, the effect is stronger on people who are usually good at maths.

The decisions we make in life often come down to Bayes' Theorem, but most of us don't even realise what it is. So how does it work?

When you hear stats and facts with extremely large numbers, it can be hard to wrap your head around what that number really represents. If you want to get a grasp on large numbers, you need to start changing perspectives and converting them into more understandable numbers.

If you thought you could only count to 10 using your fingers, think again. Using the binary system, you can quickly count into the tens of thousands.

If you have a lot of books on your bookshelf, alphabetizing it by author or title will make it easier to find specific books in the future. Here's the fastest way to do it.

A Secret Santa gift exchange is an easy way to get friends and coworkers in the giving spirit while keeping holiday spending in check. Here's the most mathematically perfect method for running your own.

Every shower you take costs a little bit of water and a lot of power to keep that water warm. If you've ever wondered just how much your shower habits cost, this calculator can help you figure it out.

No, I'm not here on behalf of the evil Big Pizza lobby. According to simple maths, if you're buying multiple small pizzas instead of getting a bigger one, you're almost always wasting money. This video breaks it down.

Video: Binary and hexadecimal are a bit baffling at a glance. The idea that a computer uses numbers and letters as representations of other numbers isn't exactly the easiest idea to wrap your head around, but Adafruit's Collin does his best to explain it.

You don't need a calculator to quickly find the center of something that's an odd length, such as 37 5/8 inches (95cm). The smart folks at This Old House show us two ways to quickly divide a length in half using just your tape measure.

Pancakes aren't too difficult to make, but why not try to make a perfect batch? These formulas will help you easily determine how much pancake batter you need overall, as well as the exact amount required for each individual pancake based on the pan you're using and how thick you like them.

We're always happy to find a large collection of free educational books, and it looks like Springer has recently made available over 50,000 books covering STEM subjects.