Answer:
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Answer:
the answer is 6 1/10
Step-by-step explanation:
Answer:
where are the three options
Step-by-step explanation:
Not addition, since

and 0 doesn't belong to the set.
Not subtraction, since

.
It is closed under multiplication. The set appears to contain all non-zero multiples of 3.
Not division, since dividing some of the numbers results in rationals which do not belong to the set.
What other operations are you supposed to consider?