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Geography, 18.07.2019 15:10 almighty3120

Questions j5 and 16 refer to the following diagram
a is the set of positive integers less than 20; b is the
set of positive integers that contain the digit 7; and
c is the set of primes.
15. how many numbers are
members of the region
labeled a?

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Answers: 2

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Questions j5 and 16 refer to the following diagram
a is the set of positive integers less than...
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