The least 5-digit number divisible by 15 is 10005.
A 5-digit number is any number from 10,000 to 99,999. To find the smallest 5-digit number divisible by 15, we need to find the smallest number in this range that is a multiple of 15.
We can start by dividing the smallest 5-digit number, 10,000, by 15:
10000 / 15 = 666.666...
Since we are looking for a whole number, we need to round up to the next whole number, which is 667.
Now, we multiply 667 by 15:
667 * 15 = 10005
Therefore, 10005 is the smallest 5-digit number that is divisible by 15. We can check this by dividing 10005 by 15, which gives us 667 with no remainder.
