In case anyone is unfamiliar: https://www.dr-mikes-math-games-for-kids.com/rice-and-chessboard.html https://www.dr-mikes-math-games-for-kids.com/rice-and-chessb

In case anyone is unfamiliar: https://www.dr-mikes-math-games-for-kids.com/rice-and-chessboard.html https://www.dr-mikes-math-games-for-kids.com/rice-and-chessb... "Oh emperor, my wishes are simple. I only wish for this. Give me one grain of rice for the first square of the chessboard, two grains for the next square, four for the next, eight for the next and so on for all 64 squares, with each square having double the number of grains as the square before." The emperor agreed, amazed that the man had asked for such a small reward - or so he thought. After a week, his treasurer came back and informed him that the reward would add up to an astronomical sum, far greater than all the rice that could conceivably be produced in many many centuries!