I know that a number is divisible by a prime number if and only if it has that prime number as a factor. So, to find the least positive whole number divisible by four different prime numbers, I need to multiply the four smallest prime numbers together. The four smallest prime numbers are 2, 3, 5, and 7. Multiplying them together, I get 2 * 3 * 5 * 7 = 210. Therefore, the least positive whole number divisible by four different prime numbers is 210. 
What is the least positive whole number divisible by four different prime numbers?