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Anonymous
7, 14, 21, and 28.
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7, 14, 27, 28
16
7,14,21,28
... 7 x 30 = 210, that should give you a clue...
21 and 28 are the two multiples.
there are 21 multiples.
Nine: 7, 14, 21, 28, 35, 42, 49, 56, 63.
30% less than 10 = 70% of 10 = 7