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Rakesh went to take an exam. After the exam, while explaining the structure of the question paper, the teacher said that 40% of the total questions were difficult and 20% of those were on algebra and 30% of those were on geometry. Also, 10% and 20% of easy questions were on algebra and geometry respectively. All the questions that Rakesh attempted were either on algebra or on geometry. What is the probability that Rakesh found all the questions difficult (Questions are either easy or difficult)?