A man take a step forward with probability 0.4 and backward with probability 0.6.The probability that at the end of eleven steps he is one step away from the starting point, is

The man is one step away from starting point in two cases(1) He takes 6 steps forward and 5 steps backward(2) He takes 5 steps forward and 6 steps backward.Required probability =11C6(0.4)6(0.6)5+11C5(0.4)5(0.6)6=0.37