题目内容双击单词支持查询和收藏哦～

Each time a certain coin is tossed, the coin lands either heads up or tails up. For any given toss, the probability that the coin will land heads up is equal to the probability that the coin will land tails up. The coin is to be tossed $$n$$ times. What is the least possible value of $$n$$ such that the probability of the coin landing heads up $$n$$ times in a row is less than $$0.05$$?

D显示答案