There are an infinite number of positive integers divisible by 3, 5, and 7. This is because there is no limit to numbers and they go on indefinitely in both a positive and a negative direction.
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Between 100 and 999 there are 448.
8 of them.
There are 2001 numbers.
The positive integers up to 4 are: 1, 2, 3, and 4. This is a total of four positive integers.
One. The only multiple of 3 that is prime is 3 itself.