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3. Let A- {x, y, z, w^ and let B- {1,2,3). Determine the number of functions from A to B that are neither one-to-one nor

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3. Let A- {x, y, z, w^ and let B- {1,2,3). Determine the number of functions from A to B that are neither one-to-one nor map y to 3. Show work. (20 points) Hint: Use the principle of inclusion-exclusion

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