Ze_ntix on Instagram: "This instagram post reposts a viral TikTok video from May 2025 by Brendan Dudas, showing him probing and excavating a massive boulder causing a persistent bare patch in his Texas lawn, ultimately requiring a crane for its 10,300-pound removal. Subsurface rocks like this commonly stem from glacial deposits or construction fill, compacting soil and blocking grass root growth; a 2023 University of Florida study notes such obstructions affect up to 15% of suburban lawns in the

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