Metro ReporterPublished Mar 25, 2016, 12:58pm|Updated Dec 11, 2019, 2:51pmThis apparently simple puzzle has caused a lot of frustrated head-scratching.EvenHarvard students have struggled with it, according to psychologist Daniel Kahneman’s book Thinking Fast and Slow.He claims that more than half of students at leading universities get it wrong, with more than 80 per cent of students at other institutions having a hard time of it.So, no pressure.Here goes…You buy a bat and a ball for£1.10The bat costs exactly one pound more than the ballSimple, right?So, what’s the answer?Drum roll please…Kahneman explainsA number came to your mind. The number, of course, is 10: 10p. The distinctive mark of this easy puzzle is that it evokes an answer that is intuitive, appealing, and wrong. Do the math, and you will see. If the ball costs 10p, then the total cost will be £1.20 (10p for the ball and £1.10 for the bat), not £1.10. The correct answer is 5p. It is safe to assume that the intuitive answer...
