+0  
 
0
149
3
avatar+77 

https://picload.org/view/dllpoccw/screenshot2018-08-21at11.52.04.png.html 

 Aug 21, 2018
 #1
avatar+196 
0

Simply calculate the values of the combinations and multiply for the first problem.

 

The second problem is really just 13578^-1, which you can calculate.

 

Try solving.

 Aug 21, 2018
 #2
avatar
0

If this is what you mean by (a), then:

7324165 nPr 645231* 1234567  nPr 123456

=2.620 131 405 190 192 662 934 080 966 39 E+5,165,891

 Aug 21, 2018
 #3
avatar+3994 
+1

(a) Permutations:  n!/(n-r)!

 

(b): Since the power is -1, we can rewrite the number as 1/that number, so \((13578)^{-1}=\frac{1}{13578}\) .

 Aug 21, 2018
edited by tertre  Aug 21, 2018

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