@Sukun: these probabilities should have been given in the questn.. since it's not given and there are 3 possible answers, i considered probability of each one of them to b correct as 1/3 (since there are 3 possible answers and only one answer is correct)
On Sun, Sep 9, 2012 at 12:48 AM, Sukun Tarachandani <[email protected]>wrote: > How do you get P(0.25 being correct) = P(0.5 being correct) = P(0.6 being > correct) = 1/3? > > > On Saturday, September 8, 2012 4:42:51 PM UTC+5:30, Shruti wrote: > >> shouldn't it b done like this : >> >> P(correct answer when choosing randomly )= P(choosing 0.25)*P(0.25 being >> correct ans)+ P(choosing 0.60)*P(0.60 being correct ans) + P(choosing >> 0.50)*P(0.50 being correct ans) >> >> >> = 2/4*1/3 + 1/4*1/3 + 1/4*1/3 [since 3 possible answers, hence >> prob of an ans being correct=1/3] >> >> taking 1/3 common, >> =1/3(2/4+1/4+1/4) >> =1/3 >> >> pls correct me if i'm wrong >> >> On Fri, Sep 7, 2012 at 7:54 PM, isandeep <[email protected]> wrote: >> >>> Ans : 0.5 >>> >>> there is two cases : >>> >>> i) if correct ans is 0.25 >>> probability will be 2/4 = 0.5 >>> ii) if correct ans is 0.6 or 0.50 >>> probability will be 1/3 = 0.33 >>> >>> since 0.33 is not in option so correct answer will be 0.5. >>> >>> On Friday, September 7, 2012 6:05:08 PM UTC+5:30, noname wrote: >>>> >>>> [image: -]14Answers <http://www.careercup.com/question?id=14553727> >>>> >>>> What is the probability of being the answer correct for this question, >>>> when the answer is chosen randomly: >>>> >>>> a. 0.25 >>>> b. 0.60 >>>> c. 0.25 >>>> d. 0.50 >>>> >>>> >>> -- >>> You received this message because you are subscribed to the Google >>> Groups "Algorithm Geeks" group. >>> To view this discussion on the web visit https://groups.google.com/d/** >>> msg/algogeeks/-/SE8PpC7PLwgJ<https://groups.google.com/d/msg/algogeeks/-/SE8PpC7PLwgJ> >>> . >>> >>> To post to this group, send email to [email protected]. >>> To unsubscribe from this group, send email to algogeeks+...@** >>> googlegroups.com. >>> >>> For more options, visit this group at http://groups.google.com/** >>> group/algogeeks?hl=en <http://groups.google.com/group/algogeeks?hl=en>. >>> >> >> -- > You received this message because you are subscribed to the Google Groups > "Algorithm Geeks" group. > To view this discussion on the web visit > https://groups.google.com/d/msg/algogeeks/-/z2HuFFlPSWYJ. > > To post to this group, send email to [email protected]. > To unsubscribe from this group, send email to > [email protected]. > For more options, visit this group at > http://groups.google.com/group/algogeeks?hl=en. > -- You received this message because you are subscribed to the Google Groups "Algorithm Geeks" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/algogeeks?hl=en.
