9, 18, 27, 36, 45, 54, 63, 72, 81.
Note that the sum of the digits always equals 9, just a cool little fact.
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what multiples do 7,5 and 9 have that are the same
The LCM of 7 and 9 is 63.
The first 3 multiples of 4 are: 4, 8, and 12.The first 3 multiples of 9 are: 9, 18, and 27.
8 and 9 are corpime, so their first common multiple is their product. The next common multiples are simply the multiples of that first multiple.The first three common multiples are therefore 72, 144 and 216.
The first 5 multiples of 5 are: 5, 10, 15, 20, 25 The first 5 multiples of 9 are: 9, 18, 27, 36, 45 The first 5 multiples of both 5 and 9 are: 45, 90, 135, 180, 225