There are 20 questions in a multiple-choice test.  Each question has five choices and one correct answer out o
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20 questiosn with five options, the probabilty to choose the correct one is 1/5 per each question.\nThe probability to answer all 20 questions is (1/5)^20.\nThe probability to answer more than 10 is (1/5)^11\nThe probability to answer any eight is (1/5)^8\nThe probability to answer maximun 7 is (4/5)^13
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The number of elements in the sample space are all the possibilities that could happen after spinning the wheel twice.\nImagine two empty boxes which you will fill out with the numbers the wheel gives. _  _\nIn the first one there are five possibilities,\nin the second one also five possibilities, therefore a total of 5*5=25.
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Ten then Two Question Marks then Space then Three Question Marks.
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How many answers are there like this one?
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100.\n\nIf 5 are defective in 250, then 20 will be defective in 1000.  If 20 are defective in 1000, then 100 will be defective in 5000.
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Here is question and answer from the SAT site.
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You need to be more specific in your questions or you'll have too much extra information.\nThere are five and they're connected to your brain.
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This cannot be ascertained without knowing how many are being selected in all...\n\n\nhttp://www.futureaccountant.com/probability/\nhttp://www.schoolingkids.com/
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Answer 1: 14 questions answered right, 1 question partially right (there was no mention of not recieving points for partially right answers)\n\nAnswer 2: 22 people (though i think my math is off)
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Is this question True or False, or Multiple Choice?
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4 is the answer I get
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It depends entirely on which test you took.  Some only count right answers, some deduct a set percentage for wrong answers.  It really depends on the test.
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C. Questions with subjective answers.
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for questions 1.  answer is 6. reason. it's a repeat.\n\nfor questions 2.  answer is 50. reason. it's a random number. \n\nHell. i dont know. just made guesses for the hell of it. i think this means i get 10 points for trying.
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once we chose 5 persons for one committe then other committe members get fixed.\n\nThe 5 members can be chosen in 10C5 ways = 10*9*8*7*6/120\nor 6*7*6 or 252 ways
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What you need to do is start sampling this particular teacher's questions and use statistical analysis to see if he/she favors any one choice.  There are a number of easy statistical analyses that should work well to see if there is any significant variation -- though of course if you're willing to go to this much work, you're probably better off listening in class.\n\nBy the way DO NOT try this on standardized tests like the SAT.  These tests penalize you for wrong answers to eliminate any benefit gained from random guessing.  That is to say, for any question there are four wrong choices and one right choice.  You get a point for a right answer and lose a quarter point for each wrong answer, so if you guessed at random you'd get four wrong for each right answer, and lose as many points as you gain.\n\nNifty, huh.
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answer the questions correctly