Question

If you have a spinning wheel with3 green sectors 1 blue sector and 1 red sector what is the probability of getting non blue sector?

Answer 1

P(E) = No. of favourable outcomes
          ----------------------------------------
               Total no. of outcomes
green sectors - 3
blue sectors - 1
red sectors  -1
∴Total no. of sectors = 3+1+1 = 5

Now,
P(non-blue sector) = 4
                                   ---
                                    5