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hartnn
 one year ago
Best ResponseYou've already chosen the best response.2sum of all probabilities must equal 1. so, add them and equate it to 1 but there are 2 values unknown.,.....

ParthKohli
 one year ago
Best ResponseYou've already chosen the best response.0The sum of all probabilities must be __

yashar806
 one year ago
Best ResponseYou've already chosen the best response.0yeah, that's why I get confused

hartnn
 one year ago
Best ResponseYou've already chosen the best response.2if any one of the ??? was given, then you could have found out other ???

yashar806
 one year ago
Best ResponseYou've already chosen the best response.0answer is b , but i dont know why?

hartnn
 one year ago
Best ResponseYou've already chosen the best response.2i would have gone with D

yashar806
 one year ago
Best ResponseYou've already chosen the best response.0but actually answer is B

ParthKohli
 one year ago
Best ResponseYou've already chosen the best response.0The answer would be B if and only if the probability of getting A+, A, B+ and B is equal to the probability of getting C+, C, D, F. But that is not given in the question, so I'd go with Hartnn.

hartnn
 one year ago
Best ResponseYou've already chosen the best response.2oh wait its possible :P

hartnn
 one year ago
Best ResponseYou've already chosen the best response.2C+ or better = 1 (C or D or E)

hartnn
 one year ago
Best ResponseYou've already chosen the best response.2P (C+ or better) = 1P (C or D or E)) =1 (0.22+0.09+0.07)

yashar806
 one year ago
Best ResponseYou've already chosen the best response.0why we choose c ,d, e ?

hartnn
 one year ago
Best ResponseYou've already chosen the best response.2C+ or better means A+ to C+ if we add all probabilities, we get =1 so, A+ to F = 1 (A+ to C+) + (C,D,F) =1 so, (A+to C+) = 1 (C,D,F)

yashar806
 one year ago
Best ResponseYou've already chosen the best response.0oh, I got it , thank you very much

hartnn
 one year ago
Best ResponseYou've already chosen the best response.2because you don't want 5 out of 8, you need probabilities of C+ or better, which needs individual probabilities. you haven't used any of the probabilities given. also, 0.62 is different from 0.625
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