Pesky Puzzlers 2025

PP 25.1: Do any or all:

1.  The largest hailstone known to have fallen in the US fell in Coffeyville, KS, in Sept 1970.  It was 17.5 inches in circumference and weighed 1.67 pounds.  What was the approximate diameter of the hailstone?
2. What is the smallest positive integer which is itself divisible by each of the integers from 1 to 12?
3. Your unorganized sock drawer contains 8 white socks, 8 blue socks, and 8 black socks. How many times do you need to reach inside the drawer and take out a sock at random to guarantee you have A)  a sock of each color? B) a pair of socks of the same color?
4. What was special about Jan 9 this year? (If you’re alert, you just might find this answer elsewhere in the Mailing. 🙂 )

Previous Puzzlers (Some are omitted for logistical reasons.)