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Let x*= 3, if x is and odd integer; let x*= 6, if x is an even integer. r and s are integers, 3r is odd, and 5+s is odd.
Quantity A
r*
Quantity B
s*
A、Quantity A is greater.
B、Quantity B is greater.
C、The two quantities are equal.
D、The relationship cannot be determined from the information given.
答案:B
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