Likely to happen - A bag contains ten black marbles, twenty white marbles, and five blue marbles. What is the probability of picking a white marble?, Equally likely to happen - What is the probability that the sun will shine tomorrow?, Certain to happen - What is the probability that the sun will rise in the east?, Certain to happen - The spinner is numbered 1,2,3,4,5,6. What is the probability that the spinner will land on an even number?, Impossible to happen - In no. 4 problem, what is the probability that the spinner will land on a number 0?,

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