Here let X be the event that the student sees a teacher. And event Y be the event that he is sleeping. We have been given that X ? ~ Y. However, we do not know anything about ~ X, and the question asks us what Y will be if ~ X.
? We cannot conclude anything.
U
All others are one less then the cube of a number.
Except white all are the colours of the rainbow.
All others are stationery.
As, 'Picture' is related to 'See' similarly the Book is related to 'read'.
Both I and II will help increases the population of dolphins.
All others are diffrent from of coocking.
9157592
All others are birds while bat is a mammal.
So, 654 is wrong and must be replaced by (218 x 3 - 4) i.e. 650.
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