Consider these three facts
* logical statement I = F
* logical statement E = T
* logical statement C = F
where F = false, T = true
If those three facts are set up, then
this means I & E = F & T = T
and it means (I & E) > C = F > F = T
So the first premise (I & E) > C is true here
Furthermore, C > ~C = F > ~F = F > T = T
The second premise C > ~C is true here
However, the conclusion I is false as set above in the initial conditions.
Because we have all true premises but they lead to a false conclusion, this means that we do not have a valid argument.
Here is what the truth table looks like to set up this argument. The blue columns are premises. The green column is the conclusion. The row marked with a red box shows the true premises leading to a false conclusion.
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