![Slide29.JPG](https://cdn.teachoo.com/8b0b38e2-fa0c-412b-838e-3f7742236086/slide29.jpg)
Last updated at Dec. 16, 2024 by Teachoo
Ex 6.3, 8 How many words, with or without meaning, can be formed using all the letters of the word EQUATION, using each letter Exactly once? Number of letters in word EQUATION` = 8 n = 8 If all letters of the word used at a time r = 8 Different numbers formed = nPr = 8P8 = 8!/(8 8)! = 8!/0! = 8!/1 = 8! = 8 7 6 5 4 3 2 1 = 40320