Binary Game. Skip to Content | Skip to Footer Cisco Binary Game The Cisco Binary Game is the best way to learn and practice the binary number system.
It is great for classes, students and teachers in science, math, digital electronics, computers, programming, logic and networking. It is also a LOT of fun to play for anyone who likes to play fast-paced arcade games. Bucharesttutor. The Abacus: Index. Mathematics Applets for Students and Instructors - Mathlets. Arsdigita 02 (Discrete Mathematics) Lecture 1/20. Rubik's Cube theory. This section introduces some basic cube theory.
Understanding a little about the cube's properties will help you to realise what is possible and what is not, as well as help you to see more elegant ways to solve Rubik's Cube. Basic definitions Learn about pieces, permutations and orientations. Laws of the cube Learn what a "legal" move is and why certain positions are not reachable by legal moves.
Symmetry Learn why positions that look different may in fact be the same. Group theory Become familiar with various subgroups of the cube and their properties. Cycles Learn what a cycle is and where cycles can be used. Parity Learn about parity and some problems it may cause. QuickMath.com - Automatic Math Solutions. Free Mathematics Tutorials, Problems and Worksheets (with applets) Useful. Geometry. Math. LaTeX Online Equation Editor - StumbleUpon. Maths for Laughs. The Tenth Dimention. Interactive Mathematics Activities. Combinations and Permutations. What's the Difference?
In English we use the word "combination" loosely, without thinking if the order of things is important. In other words: So, in Mathematics we use more precise language: In other words: A Permutation is an ordered Combination. Permutations There are basically two types of permutation: Repetition is Allowed: such as the lock above. 1. These are the easiest to calculate. When we have n things to choose from ... we have n choices each time! When choosing r of them, the permutations are: n × n × ... (In other words, there are n possibilities for the first choice, THEN there are n possibilites for the second choice, and so on, multplying each time.) Which is easier to write down using an exponent of r: n × n × ...
Example: in the lock above, there are 10 numbers to choose from (0,1,...9) and we choose 3 of them: 10 × 10 × ... (3 times) = 103 = 1,000 permutations So, the formula is simply: 2. In this case, we have to reduce the number of available choices each time. Do you see? 1. 2. Online Formula Integrator, Derivative Calculator, Graph Plotter (2D &... Binary marble adding machine. Way back when I built my Marble Machine one , I incorporated a few logic-like elements in it, including several divide by two mechanisms, as well as a complicated and slightly unreliable divide by 6 mechanism.
It had occurred to me that perhaps with an insane amount of perseverance, it might be possible to build a whole computer that runs on marbles. But my second marble machine was much less based on logic - it was more about just making lots of cool noises. But then I had an idea as to how the divide by two mechanisms from my first marble machine could be cascaded together to function as a sort of adder register or counter. Once I had that idea, I knew I had to try it.
A few months later, I spent a couple of days in my workshop and built this binary marble adding machine. The core of the invention is a modification of the divide by two flipflop to retain the marble that falls off the right side and keep it until the flipflop is flipped to the left by the next marble. Math Games- Geometry Games. The Tenth Dimention.