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Recently, a YouTube project has been popping up, "I bought 10 million yen worth of lottery tickets," and we tested the probability of winning over a billion yen. We also simulated the year-end Jumbo lottery. *Calculation. There are 75 winning tickets (winning over 100 million yen) among the 500 million tickets. From this, draw 33,333 tickets to find the probability of drawing at least one winning ticket. All you have to do is find the probability of drawing a losing ticket and subtract it from 1. There are a total of (500 million)C(33,333) ways to draw the lottery. *C is the combination, and the way to draw a losing ticket is (500 million-75)C(33,333). Therefore, the probability of buying 10 million yen worth of tickets and winning over 100 million yen is 1-{(500 million-75)C(33,333)/(500 million)C(33,333)}=0.4987637%. In other words, if you do it about 201 times, you will win over 100 million yen. #PhysicsEngineKun