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eugeniaday
 3 years ago
7!*8!*3!/5!*9!
eugeniaday
 3 years ago
7!*8!*3!/5!*9!

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UnkleRhaukus
 3 years ago
Best ResponseYou've already chosen the best response.1\[n!=n\times(n1)!\]

UnkleRhaukus
 3 years ago
Best ResponseYou've already chosen the best response.1some natural number

eugeniaday
 3 years ago
Best ResponseYou've already chosen the best response.0so if its not a number how would i solve this

Azteck
 3 years ago
Best ResponseYou've already chosen the best response.0Well you're diverting yourself to your own question here.

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

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

eugeniaday
 3 years ago
Best ResponseYou've already chosen the best response.0no still not getting

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

UnkleRhaukus
 3 years ago
Best ResponseYou've already chosen the best response.1the trick is to cancel common factors ,

eugeniaday
 3 years ago
Best ResponseYou've already chosen the best response.0i 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

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

eugeniaday
 3 years ago
Best ResponseYou've already chosen the best response.0but 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

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

eugeniaday
 3 years ago
Best ResponseYou've already chosen the best response.0what its not that was one of the options

UnkleRhaukus
 3 years ago
Best ResponseYou've already chosen the best response.1can you show me your working

agent0smith
 3 years ago
Best 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.
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