Respuesta :

a)  P of blue and 
 P of not white  = 8/12

b) P of not red and not white = 3/12

hope it helped

The answer is 8/12 and 3/12.

Probability is the ratio of the number of outcomes in an exhaustive set of equally likely outcomes that produce a given event to the total number of possible outcomes.

How to find the probabilities  p(blue | not white),  p(not red | not white)?

Given: A box contains three blue marbles, five red marbles, and four white marbles.

So the marbles which are not blue are 9.

not white are 8.

not red is 7.

a) P of blue and

P of not white  = 8/12

b) P of not red and not white = 3/12.

Learn more about probability on: https://brainly.com/question/13604758

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