Use the formula for the cardinal number of the union of two sets to solve 9396.Set A
Chapter 2, Problem 95(choose chapter or problem)
Use the formula for the cardinal number of the union of two sets to solve Exercises 93–96.
Set A contains 8 letters and 9 numbers. Set B contains 7 letters and 10 numbers. Four letters and 3 numbers are common to both sets A and B. Find the number of elements in set A or set B.
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