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Although a full IQ test takes an hour or more and costs hundreds of pounds, performance on this one simple test is highly predictive of your overall intelligence. 虽然一个完整的智商测试需要一个小时或者更长，并且花费上千元，但这个简单的测试却可以高度预言你的大概智商。 Look at the four cards above. We know for a fact that each card has a letter on one side and a number on the other. Truthful Terry says: ‘Every card that has a D on one side has a 3 on the other.’ What is the fewest number of cards you need to turn over to find out whether Truthful Terry is actually telling the truth? And which ones? The answer is shown at the bottom of the page. 请看上面的四张卡片。我们已知每张卡片都是一面有字母，另一面数字。Truthful Terry说：“每张一面含字母D的卡片，其另一面都是数字3。”你需要翻至少几张牌来确定Truthful Terry究竟有没有说实话？具体又要翻哪张牌呢？答案在文章结尾。 If you got it right, congratulations! Either you’ve seen this before or you’re a candidate for Mensa. 如果你回答正确，恭喜！或许你之前看过这个，或许你是世界顶级智商俱乐部门萨的成员。 Seriously, I’ve given this test to hundreds of people up and down the country, and very few get it right (the exception was an audience of Google software engineers, not a single one of whom messed up). The analytical and deductive skills you’ve shown are one of the most important components of intelligence. | 
