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

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

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

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

UnkleRhaukusBest 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

UnkleRhaukusBest 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

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

UnkleRhaukusBest 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

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

eugeniadayBest 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

UnkleRhaukusBest 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

eugeniadayBest 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

UnkleRhaukusBest 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

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

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

agent0smithBest 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
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