Question 4
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If , and then is:
If , evaluate , , , and .
Out of a group of teachers in a school, teach Mathematics, teach Physics and teach Chemistry. teach Mathematics and Physics but none teach both Mathematics and Chemistry. How many teach Chemistry and Physics; how many teach only Physics?
If and then how many proper subset of can be created?
The number of subsets of the set is:
If and , then find the value of 'x'.
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