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All multiples of 3 have digits that add up to a multiple of 3. There are 333 multiples of 3 between 1 and 1000.
All multiples of 3 have digits that add up to a multiple of 3. There are 333 multiples of 3 between 1 and 1000.
There are two.
Of the 729 numbers that satisfy the requirement of positive integers, 104 are divisible by 7.
7
10
22.
There are 1,000 positive integers between 1,000 and 9,999, inclusive, that are divisible by nine.
There are 22 integers between them.
All multiples of 3 have digits that add up to a multiple of 3. There are 333 multiples of 3 between 1 and 1000.
All multiples of 3 have digits that add up to a multiple of 3. There are 333 multiples of 3 between 1 and 1000.
750
450450450450
5 of them.
There are two.
There are 3168 such numbers.