question_answer

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

A)  \[{}^{11}{{C}_{6}}\,{{(0.2)}^{5}}\,{{(0.4)}^{3}}\]            

B)  \[{}^{11}{{C}_{6}}\,{{(0.4)}^{6}}\,{{(0.6)}^{5}}\]

C)  \[{}^{11}{{C}_{6}}\,{{(0.6)}^{6}}\,{{(0.4)}^{5}}\]            

D)  \[{}^{11}{{C}_{6}}{{(0.24)}^{7}}\]

E)  None of these