please helps me to solve the question 3c. The answer is 2/9 but i do not know how to get that...T_T
Follow Math Help Forum on Facebook and Google+
Originally Posted by daominhhai129 please helps me to solve the question 3c. The answer is 2/9 but i do not know how to get that...T_T Let R be a right move: .
Let L be a left move: .
To end at B in three moves, we need RRL, RLR, or LRR.
Each of those has the same probability and
thank you very much..but my answer sheets say it's 2/9....i don't know whether my answer sheet is wrong or i do wrongly...
Originally Posted by daominhhai129 my answer sheets say it's 2/9.. No the answer sheet is correct.
oh haha..thank you thank you..i'm so stupid..ya..now i can understand..thanks
View Tag Cloud