Permutations
The different arrangements that can be made with a given number of things taking some or all of them at a time are called permutations. The symbol n P r or P(n,r) is used to denote the number of permutations of n things taken r at a time..
Example 1:
1. Three boys and three girls are to be seated around a table in a circle. Among them, the boy X does not want any girl as neighbour and girl Y does not want any boy as neighbour. How many such arrangements are possibl..
RightBrainMath.com Great visual patterns and overviews of how numbers work from a right brain perspective. Tom Biesanz (Mister Numbers) shows how the patterns look and how they relate to families of factor numbers. http Math times table created from fun patterns as a way to learn multiplication tables. This video also teaches place value. This video has the student create worksheets where they can learn the times tables. This is useful for teaching math in a classroom, at home, as part of ...
RightBrainMath.com Math multiplication table tricks using patterns on Tic-Tac-Toe Squares for the Threes, Sixes, and Nines. MisterNumbers math tricks will rock you as you learn multiplication for the 3 6 and 9 times tables in this video and the Sevens, Fours, and even the whole times table on other videos. This is fun for homeschool math or in a classroom. Teachers and parents will find this lesson for math times tables fun for students and for the Teacher. See other Mister-Numbers videos to ...
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