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 Open

UnkleRhaukus Group TitleBest ResponseYou've already chosen the best response.1
\[n!=n\times(n1)!\]
 one year ago

eugeniaday Group TitleBest ResponseYou've already chosen the best response.0
what is n
 one year ago

UnkleRhaukus Group TitleBest ResponseYou've already chosen the best response.1
some natural number
 one year ago

eugeniaday Group TitleBest ResponseYou've already chosen the best response.0
so if its not a number how would i solve this
 one year ago

Azteck Group TitleBest ResponseYou've already chosen the best response.0
Well you're diverting yourself to your own question here.
 one year ago

UnkleRhaukus Group TitleBest ResponseYou've already chosen the best response.1
\[\frac{\color{teal}{7!}\times8!\times3!}{5!\times\color{orange}{9!}}=\frac{\color{teal}{7\times6\times5!}\times8!\times3!}{5!\times\color{orange}{9\times8!}}\]
 one year ago

UnkleRhaukus Group TitleBest ResponseYou've already chosen the best response.1
\[n!=n\times(n1)!\]\[\quad=n\times(n1)\times(n2)!\]\[\quad=n\times(n1)\times(n2)\times\cdots\times3\times2\times1\]
 one year ago

eugeniaday Group TitleBest ResponseYou've already chosen the best response.0
no still not getting
 one year ago

UnkleRhaukus Group TitleBest ResponseYou've already chosen the best response.1
for example \[4!=4\times3\times2\times1\]\[6!=6\times5\times4\times3\times2\times1\] \[\frac{4!}{6!}=\frac{4\times3\times2\times1}{6\times5\times4\times3\times2\times1}=\frac{4!}{6\times5\times4!}=\frac1{6\times5}=\frac1{30}\]
 one year ago

UnkleRhaukus Group TitleBest ResponseYou've already chosen the best response.1
the trick is to cancel common factors ,
 one year ago

eugeniaday Group TitleBest ResponseYou've already chosen the best response.0
i subtract the 7 and 3 on the top so i would have 8*6*5*4*2*1/8*7*6*4*3*2*1
 one year ago

UnkleRhaukus Group TitleBest ResponseYou've already chosen the best response.1
\[\frac{{7!}\times8!\times3!}{5!\times{9!}}=\frac{{7\times6\times5!}\times8!\times3!}{5!\times{9\times8!}}=\frac{{7\times6\times\cancel{5!}}\times\cancel{8!}\times3!}{\cancel{5!}\times9\times\cancel{8!}}\]
 one year ago

eugeniaday Group TitleBest ResponseYou've already chosen the best response.0
but why didnt you right it out all the way as in 7*6*5*4*3*2*1 for all the numbers on top and bottom then facter them out
 one year ago

UnkleRhaukus Group TitleBest ResponseYou've already chosen the best response.1
i choose not to fully expand the factorials because it takes to much space and time, bytheway 14 isn't quite right
 one year ago

eugeniaday Group TitleBest ResponseYou've already chosen the best response.0
what its not that was one of the options
 one year ago

UnkleRhaukus Group TitleBest ResponseYou've already chosen the best response.1
can you show me your working
 one year ago

agent0smith Group TitleBest ResponseYou've already chosen the best response.0
@eugeniaday if you do these on your calculator, make sure you use parentheses! 7!*8!*3!/5!*9! is NOT the same as 7!*8!*3!/(5!*9!), and your calculator can't instinctively know what you *meant* to enter.
 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.