Got Homework?
Connect with other students for help. It's a free community.
Here's the question you clicked on:
 0 viewing

This Question is Closed

lirffejBest ResponseYou've already chosen the best response.0
what are those words??..can you explain why come up of that solution?
 one year ago

sauravshakyaBest ResponseYou've already chosen the best response.0
n! = n*(n1)*(n2)*...*3*2*1
 one year ago

ZeHanzBest ResponseYou've already chosen the best response.0
There are 8 letters. To make words, you put the letters down, one by one. The first one can be chosen in 8 ways. The second in 7 ways. You've got 8*7 =56 possibilities already! This continues all the way down to the last letter. So you have 8*7*6*5*4*3*2*1 possibilities. The mathematical notation for this is 8!
 one year ago

ZeHanzBest ResponseYou've already chosen the best response.0
One problem to solve: there are 2 E's so we have counted too much. We have to divide by the number of same possibilities if the two E's are switched. This switching of E's can be done in 2*1 = 2! ways. End result: 8!/2! = 20160
 one year ago

lirffejBest ResponseYou've already chosen the best response.0
are you sure of that??
 one year ago

ZeHanzBest ResponseYou've already chosen the best response.0
Surprising many, isnt it?
 one year ago

lirffejBest ResponseYou've already chosen the best response.0
@ZeHanz are you sure??
 one year ago

ZeHanzBest ResponseYou've already chosen the best response.0
If you read carefully what I wrote, you'll come to the same conclusion. There is no escape. There are surprisingly many ways to make words with 8 letters...
 one year ago

ZeHanzBest ResponseYou've already chosen the best response.0
Of course, most words would be difficult to pronounce and without meaning. Nevertheless, there are 20160 possibilities, If you find that hard to grasp, just try with fewer letters: If you have 1 letter, you can make only one "word". With 2 letters, the firat one can be chosen from 2, the second has only one possibility. So: 2*1 3 letters: 3*2*1 = 6 4: 4*3*2*1 = 24 It goes up really fast!
 one year ago

lirffejBest ResponseYou've already chosen the best response.0
ok..thanks,now i understand..
 one year ago
See more questions >>>
Your question is ready. Sign up for free to start getting answers.
spraguer
(Moderator)
5
→ View Detailed Profile
is replying to Can someone tell me what button the professor is hitting...
23
 Teamwork 19 Teammate
 Problem Solving 19 Hero
 Engagement 19 Mad Hatter
 You have blocked this person.
 ✔ You're a fan Checking fan status...
Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.