Posted by sean on May 4, 2019 at 11:55 pm in Geek Stuff with No Comments


I found an IQ Test online today.

I must admit – it was a lot shorter and easier than the one Bart cheated on, during that episode of The Simpsons, some stupidly long time ago! Despite its age, I am yet to see a Kwyjibo on a David Attenborough documentary.

There are only three questions in this quiz, which is called a Cognitive Reflection Test (CRT) – don’t worry, it doesn’t mean anything to me, either.

It is reported that over 80% of people get at least one of these questions wrong, with a third getting all three incorrect.

I don’t know how many people got all three correct, but it is certainly possible, as yours truly did exactly that. I feel rather proud. Let’s be honest, here. Had I not scored 100%, I wouldn’t be blogging about it at all!

The three questions are:

  1. A bat and a ball cost £1.10 in total. The bat costs £1.00 more than the ball. How much does the ball cost?
  2. If it takes five machines five minutes to make five widgets, how long would it take 100 machines to make 100 widgets?
  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?

I hope you got on OK, with those questions.

I will post the answers below. But first, a few photos of one member of the ‘one in three’…

The answers:

  1. 5 pence
  2. 5 minutes
  3. 47 days

What do I win?

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