A total of 8 different books are to be distributed among 4 students so that each student receives at least one book. At most 2 of the students are to receive the same number of books, and no two of the remaining students are to receive an equal number of books. What is the least possible number of books needed for distribution?

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A total of 8 different books are to be distributed among 4 students so that each student receives at least one book. At most 2 of the students are to receive the same number of books, and no two of Leer más…

Maria and John start cycling toward each other from two points, A and B, respectively. Keeping in mind that John passes through B 1 hour earlier than Maria passes through A. The distance between A and B is 60 kilometers. Maria’s cycling pace is 15 kilometers per hour, while Juan’s is 20 kilometers per hour. How far did John travel when they met?

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Maria and John start cycling toward each other from two points, A and B, respectively. Keeping in mind that John passes through B 1 hour earlier than Maria passes through A. The distance between A and B is 60 kilometers. Leer más…