I Hava a questions and answers I need a explanation of following Probability

The probability of a tornado hitting a certain county each year is 1M. 1. Find the probability that a tornado will hitthe county three years in a row. 1 64 2. Find the probability that a tornado will NOT ' e county three years in a row. 3. Find the probability that a tornado will hitth .- nty in at least one of the next three years. A bag contains 3 red circles, 4 red squares, 2 yellow circles, and 1 green square. 4. Suppose you draw one shape at random from the bag. Find the probability that the shape is either red or is a square. U 5. Suppose you draw three at random, without replacing them after each draw. Find the probability that none of them is a square. 5X4X3_ 50 _ 1 10 9 872012 A bag contains 5 red marbles and 10 yellow marbles. 6. What is the probability that you draw four red marbles in a row without replacement? a 7'. What is the probability that you draw four yellow marbles in a row if you replaoe each marble after you draw it? 16 81 Ajar contains 10 red marbles, 15 yellow marbles, and 5 blue marbles. Suppose you draw 4 marbles at random, one at a time and without replacing them. 8. What is the probability that all are red? 9. What is the answer if you replace each marble after you draw it? 1 81 Ajar contains 4 red squares, 3 blue circles, 2 red circles, and 6 green squares. 10. Suppose you draw one shape at random and then draw another at random, without replacing the rst shape. What is the probability that both shapes are circles? 11.Retum all the shapes to the jar and then draw one at random. What is the probability that it is red or that it is a square? 4 E A farm has 50 animals: 10 black horses 10 brown goats 5 white goats 15 white sheep 10 black cows 12.You need to take 5 animals to the county fair. In how many ways could you choose 2 goats and 3 horses? The kids in the neighborhood want to pet an animal. You choose one animal for them to pet. 13.What is the probability that the animal is a sheep o - loat? 3 2E 15 15 30 E+' 14.What is the probability that the animal is white or a sheep? l] Now you decide to let the kids pet 2 animals, but you replace the rst animal before taking out the second. 15.What is the probability that both animals ar- - . LES? Il Now you decide to let the kids pet 2 animals, but you replace the rst animal before taking outthe second. 15.What is the probability that both animals ar- . - LES? 15.What is the probability that both animals are black? D You need to put 3 animals in the barn. (No replacement) 1T.What is the probability that all 3 animals a - 1B.What is the probability that at least 1 animal is black? D