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ATQ, To find the total number of students in the class, you add the rank from the top and the rank from the bottom and then subtract 1 (to avoid double-counting the student at the intersection): Total number of students = Rank from the top + Rank from the bottom - 1 In this case: 
So, there are 32 students in the class.
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The team of A B and C was supposed to complete a piece of work. Working alone, A could have completed the same work in 190 hours. B could have completed...
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