7. If A = {6, 7, 8, 9), B = {4, 6, 8, 10) and
C = {x :xe N: 2 < x <7}; find :
(1) A-B
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Answer:
A-B = {7,9}
Step-by-step explanation:
We have to exclude the numbers common between set A and set B in set A. The remaining numbers in the set A is the answer.
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