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Q: What three digit numbers are multiples of 30?

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29 of them.

There are 30 two-digit multiples of 3 plus 18 two-digit multiples of 5 minus 6 two-digit multiples of both. Answer: 42

42 72

Any multiples of 30 have these three factors. Multiples of 30.

-27

45 multiples of 2 plus 30 multiples of 3 minus 15 multiples of 6 equals 60 numbers

The answer will depend on how many digits there are in each of the 30 numbers. If the 30 numbers are all 6-digit numbers then the answer is NONE! If the 30 numbers are the first 30 counting numbers then there are 126 combinations of five 1-digit numbers, 1764 combinations of three 1-digit numbers and one 2-digit number, and 1710 combinations of one 1-digit number and two 2-digit numbers. That makes a total of 3600 5-digit combinations.

Starting at 12 and ending at 99, there are 30 two-digit numbers divisible by three.

They are 24, 30 and 36

The first three multiples of 10 are 10, 20 and 30. Since numbers don't stop, there are no last three.

Multiples of 30 from 120 to 990

lcm(2, 3, 5) = 30 → 2 digit common multiples are 30, 60, 90.

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