A test consists entirely of multiple choice questions, 10 questions in total. Each question has 4 options to choose from, of which only one is correct. Negative marking for incorrect answers does not apply and a mark of 50% for the test constitutes a pass. 12. What is the probability that you will pass the test if you randomly guess every single answer? Express your answer rounded to three decimal places. 13. Yoko reckons she will increase her chances of passing by studying only one part of the work extremely well. Although only 2 questions were based on the work she studied, at least she is 100% sure that she got them both correct. If she guessed the remaining answers at random, what is the probability that she will pass the test? 2