How many positive integers less than 20 are either a multiple of 2,

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C

D

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How many positive integers less than 20 are either a multiple of 2, an odd multiple of 9, or the sum of a positive multiple of 2 and a positive multiple of 9 ?

A. 19
B. 18
C. 17
D. 16
E. 15

Answer: E
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