This IQ test is the shortest in the world and only consists of three tricky questions. Many students from prestigious universities also answered incorrectly. Wow, what kind of problem is it and how difficult is it?
This question was conducted in a 2005 study. The respondents were students from the prestigious Harvard and Yale campuses. Most fail to answer these three questions correctly. Only 17% got a perfect score.
What is the question? Try to do it carefully, okay!
1. A bat and a ball cost USD 1.10 in total. The bat costs USD 1 more than the ball. How much does the ball cost?
2. If it takes 5 machines and 5 minutes to create 5 widgets, how long will it take 100 machines to create 100 widgets?
3. In a lake, there is a patch of lilies. Every day, the number doubled. If it takes 48 days for the swath to cover the entire lake, how many days will it take for the lily patch to cover half the lake?
Okay. Are you confident with your answer, detikers? Let's look at the answer below, and hopefully it's all right. Oh yeah, don't read it first or scroll down if you still want to guess.
Answer:
1. USD 0.05. If you answer 10 cents, the bat and the ball will cost $1.20. not USD 1.10.
2. 5 minutes. It is revealed in the problem that it takes 5 minutes per 1 widget engine to create 1 widget.
3. 47 days. Anyone been fooled by answering 24 days? Remember the key, the squares multiply every day. Automatically covering half the lake will completely cover it in just one day. Subtract one day from 48 days, and you will get 47 days answer.
So, can anyone answer all the questions with the right answer? I think this could be a candidate for a student at Harvard.