Alex Fletcher on Instagram: "Check out this miniature hand built Saint Class Locomotive. This is my most viewed reel ever and doesn’t this stunning piece of kit deserve it. He said he built it “during lockdown”. It would take me more than a couple of years to build something like this. #steamlocomotive #steamtrain #livesteam #narrowgauge #modelrailway #modelrailroad"

Naman Pal on Instagram: "The Josephus Problem is one of the most fascinating puzzles in math & computer science. 🌀 Imagine this: 100 people stand in a circle. Starting from person 1, each person eliminates the one next to them. This continues round and round… until only one survivor is left. 😨 Now here’s the mind-blowing part → Instead of simulating the whole process, math gives us a direct formula to find the last survivor. For k = 2 (kill next person): 1. Write the number of people in binary