ncert q no. 4 ex 13.4 here x(tt)=0 then p(tt)=1/4 how plz explain sir....

Asked by Alina Imtiyaz imtiyaz | 6th Jan, 2014, 09:47: AM

Expert Answer:

X(TT) = 0

Let X represents the number of heads.

So, P(X=0) = P(TT) = 1/4


[Since, it is the probability of selecting 0 heads, i.e, 2 tails.

Sample space = {HH, HT, TH, TT}

So, P(TT) = 1/4]


Answered by  | 6th Jan, 2014, 10:11: AM

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