Alex has to take a quiz, which has ten true false-type question each carry 1 mark. What is the probability that Alex's can score more than 8 mark in the quiz. Given that he decides to guess randomly on the quiz.	Choose the correct choice from the following options:  A) 12/1024  B) 11/1024  C) 11/256  D) 12/256  E) 14/256
Each question has 2 options (True or false). Total number of ways of answering all 10 questions = (2)10(2)10   More than 8 correct means either 9 correct or all correct.   Number of ways such that 9 correct = 10! / 9! = 10   Number of ways of All correct = 1   Therefore, probability of more than 8 correct = 11/(2)1011/(2)10 = 11/1024   ANSWER:11/1024
<result>B</result>
Alex has to take a quiz, which has ten true false-type question each carry 1 mark. What is the probability that Alex's can score more than 8 mark in the quiz. Given that he decides to guess randomly on the quiz.