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 from the starting point.

Question

anonymous · Answer

question are getting briefer and briefer
guess that is why they are called "lessens"

goformit100 · Answer

@love_jessika15 @satellite73

uri · Answer

Combination..

goformit100 · Answer

Ya we all here know we have to use it.... But How to use it @uri

uri · Answer

lol

anonymous · Answer

five forward and six back 
$$\binom{11}{5}.6^5.4^6$$ i think

uri · Answer

One forword one backward So,11C6 or 11C5

anonymous · Answer

or five backward and six forward 
$$\binom{11}{5}.4^6.6^5$$ add them up

uri · Answer

11C6=11*10*9*8*7*6/6*4*4*3*2*1=
11C5=11*10*9*8*7/5*4*3*2*1=

goformit100 · Answer

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