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**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