Find the number of pieces that aren't red, by subtracting the red from the total:
11 - 5 = 6 are not red.
The probability is the number of none red, over the total number of pieces: 6/11
Since theirs no question...
The formula for PT:
a^+b^=c^
It is my opinion that it is C) but i am not sure, you might be correct though...
