Probability > ReasoningExercises
An opaque box contains colored marbles, green ones and yellow ones. The green marbles are numbered through 7, the yellow ones through 3. You shake the box and without looking you take out one marble.
What is the probability that the marble is yellow?
What is the probability that the marble has number printed on it?
What is the probability that the marble has number printed on it?
What is the probability that the marble is green with a number greater than printed on it?
A lottery is held. The lottery tickets have numbers through 999. All tickets have been sold. A number is drawn completely randomly. That number will get second prize.
You have ticket number 113. What is the probability you win that prize?
Your friend tells you that she has a ticket with an even number. What is the probability that she wins second prize?
What is the probability that an even number is drawn?
Why are the probabilities at b and c different?
Ticket number 771 draws second prize. Next the number for first prize is drawn. Number does not compete any more.
What is the probability of first prize for you now?
What is the probability of an even number now?
You are throwing two dice and count the number of pips that come up on top.
What is the probability that pips come up on top?
What is the probability of at most pips?
What is the probability of more than pips?
What is the probability of an even number of pips?
During a soccer tournament a coin is tossed at the start of each match to determine which team gets the kick off. In this tournament Cambuur plays four matches.
What is the probability that Cambuur wins the toss in the first match and gets to kick off?
What is the probability that Cambuur gets to kick off all four matches?
What is the probability that Cambuur can kick off at least three times?
You are tossing three coins.
Determine the probability of two times "tails".