Oxford University offers the 'world's hardest test' - here's how to answer the questions

The entrance exam for All Souls College at Oxford University has been called the world's hardest test.

That's because it's nearly impossible to revise for. The questions are abstract and there are no right or wrong answers.

Only a twentieth of the Oxford graduates who take the test are invited to continue the process.

The prize is a 7-year fellowship at Oxford University, which typically goes to two students each year.

The test comes up in September, so a new batch of applicants have just run the gauntlet.

We spoke to someone who both passed their own All Souls exam and now grades them. Our source gave us the inside track on what examiners look for. When you're done, check out all the past exam questions here.