Looks easy, right? It turns out that 40% of young adults today get this wrong as opposed less than 10% in the 80s and 90s. That a pretty shocking statistic. Try to work it out and we’ll post the answer below. Good luck!!
Image source: MIC
Did you work it out? Scroll down to find out.
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So what answer did you get? Well the elusive answer is: ONE…. Surprised?? Watch the worked solution here.
