Math Question: Convert the mixed number 3 2/5 into an improper fraction and simplify it. Factorize this resulting fraction. Identify the real number that corresponds to the simplified fraction.
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How many different ways can 4 students be selected out of a group of 10 students for a committee?
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What is the mode of this data set: 3, 5, 7, 5, 9, 3, 1, 5?