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I am trying to figure out do i make these a fraction..

 

 

For the ones thats wrong...

 

 

Write and evaluate an expression of the form  C(n, r) that represents each number of combinations of r cubes that can be taken from the eight cubes shown.

 

Guest Nov 7, 2018
 #1
avatar+13718 
0

I think you got a bunch of red 'x's because you didn't write the left side of the expression as

 c 8,1

 c 8,2

.

.

.

etc

ElectricPavlov  Nov 7, 2018
 #2
avatar+91360 
+1

I think it's the way you are entering data into the first box

 

For example

 

The first one should be

 

C (  [ 8 ,1 ] )   

 

So...     8,1   should be the answer in the box

 

Knowing this....the rest should be easy

 

 

cool cool cool

CPhill  Nov 7, 2018

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