Maths students were left scratching their heads over an 'impossible' exam question. Many teenagers taking the Edexcel GCSE Maths paper said they were ...
"A tough one, even I had to spend some time looking where to start," Manchester university student Harry Surplus tweeted. "Sorry #EdexcelMaths but what was that last question," one student tweeted. A University of Manchester maths student even admitted he found it 'tough'.