Imperial College London fiasco as students sitting exam find answers stapled to back

University students burst out laughing in the middle of a tough engineering exam when they became aware the answers were stapled to their tests.

The first year students at Imperial College London thought it was a stroke of luck when the exam mark scheme was left attached to their Operating Systems test paper.

At first the students kept their heads down when they spotted the error, but within minutes the 40 undergraduates were in fits of giggles.