Question: 8 Thread 7.c Problem 7.1.47 Let F be a function from set X to set Y, and let C and D be any subsets of

8 Thread 7.c Problem 7.1.47 Let F be a function from

8 Thread 7.c Problem 7.1.47 Let F be a function from set X to set Y, and let C and D be any subsets of Y Prove that: For all subsets C and D of Y, n F-1(D)

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