It’s the perfect solution to test your intelligence without having to go through a long list of questions.

The world’s shortest IQ test consists of just three math questions, which shouldn’t take too long to answer.

But beware, it’s pretty hard!

Called the Cognitive Thinking Test, the quiz is not new, but was originally part of a research article published in 2005 by MIT Professor Shane Frederick. This document has recently resurfaced online, leaving many people eager to give it a try.

As part of his research, Professor Frederick took the test to over 3,000 participants from a variety of educational backgrounds – and even those who attend top US universities such as Yale and Harvard struggled to find all the answers. , Mirror Online reports.

Of all those who participated, only 17 percent managed to get three out of three points on the test, which means 83 percent of people failed – how will you fare?

Speaking about the test, Prof Frederick said: “The three elements of CRT are ‘easy’ in the sense that their solution is easily understood when explained, but achieving the correct answer often requires removing an erroneous answer which sprang “impulsively” ‘to mind. “

### Here is an overview of the questions

1. A bat and a ball cost \$ 1.10 in total. The bat costs \$ 1 more than the ball. How much does the ball cost?

2. If it takes five machines five minutes to create five widgets, how long would it take 100 machines to create 100 widgets?

3. In a lake, there is a square of water lilies. Every day, the patch doubles in size. If it takes 48 days for the patch to cover the entire lake, how long would it take for the patch to cover half of the lake?

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These are the three most common answers people guess – but they’re actually incorrect.

1.10 cents

2.100 minutes

3. 24 days

Professor Frederick adds, “Anyone who thinks about it for a moment would agree that the difference between \$ 1 and 10 cents is only 90 cents, not \$ 1 as the problem states.

“In this case, detecting this error is tantamount to fixing the problem, because almost everyone who does not answer” ten cents “does, in fact, give the correct answer.”