World's shortest IQ Test [Test your IQ now]

If you've ever desired to assess your intelligence without enduring a lengthy IQ test, we have an ideal solution for you. The world's briefest IQ test consists of only three math questions, ensuring a quick completion time. However, it's important to note that this test is quite challenging!

Referred to as the Cognitive Reflection Test, this quiz has been around for a while and was originally featured in a research paper published in 2005 by MIT professor Shane Frederick. Recently, the paper has resurfaced online, generating significant interest among those eager to take on the challenge. In Professor Frederick's study, over 3,000 participants with diverse educational backgrounds were asked to complete the test. Even individuals attending esteemed American universities like Yale and Harvard encountered difficulty in solving all of the questions.

Question 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?

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

Question 3
In a lake, there is a patch of lily pads. 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?

These are the three most common answers that people come up with- but they are actually incorrect.

1. 10 cents

2. 100 minutes

3. 24 days

For the answers go here