Permutations | MathHelp.com - By MathHelp.com
Transcript
| 00:0-1 | A permutation is an arrangement of objects in which order | |
| 00:03 | is important . So in this example , to find | |
| 00:07 | the number of permutations of the letters , A , | |
| 00:10 | B and C , we find the number of ways | |
| 00:13 | we can arrange the order of the letters , A | |
| 00:15 | , B and C . For example , if we | |
| 00:19 | start with the letter A , we can arrange the | |
| 00:22 | letters as abc or a C . B . If | |
| 00:28 | we start with the letter B , we can arrange | |
| 00:31 | the letters as B , A , C or B | |
| 00:34 | C . A . Yeah . And if we start | |
| 00:38 | with the letter C , we can arrange the letters | |
| 00:40 | as C , A , B or C , B | |
| 00:43 | . A . So there are 123456 ways . We | |
| 00:50 | can arrange the order of the letters A , B | |
| 00:53 | and C , which means that there are six permutations | |
| 01:01 | . Yeah , of the letters , A , B | |
| 01:06 | and C . |
Summarizer
DESCRIPTION:
This lesson covers congruent figures. Students learn that if two figures are congruent, then their corresponding parts are congruent. For example, if two triangles are congruent, then their corresponding angles are congruent, and their corresponding sides are congruent. Students are then asked to complete congruence statements using given figures.
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