Question 1083140
8C2 number of ways (which is 28)(1/5)^2(4/5)^6, which are the probabilities of getting it right or wrong.
8C2=8!/2!6!=8*7/2=28
probability is 0.2936, if random guessing occurs.
Expected value is 8*1/5=1.6, so 2 is a likely result for random guessing.