Do it 10 times and you could get 7 heads and 3 tails, but flip it 1000 occasions and you count on to end up close to 500 of each. https://www.recreationsooke.com/%EC%95%88%EC%A0%84%ED%95%9C%EC%B9%B4%EC%A7%80%EB%85%B8-%EC%8B%A0%EB%A2%B0%ED%95%A0-%EC%88%98-%EC%9E%88%EB%8A%94-%EC%98%A8%EB%9D%BC%EC%9D%B8-%EC%B9%B4%EC%A7%80%EB%85%B8%EC%9D%98-%EB%AA%A8%EB%93%A0/