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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.
There are 1,000 positive integers between 1,000 and 9,999, inclusive, that are divisible by nine.
7
10
22.
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
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5 of them.
There are two.
There are 3168 such numbers.