Yesterday it emerged that Japanese Yakuza bosses now require gangsters to sit exams. We dug out some sample questions.

▶ Match the amounts owed to the breakages: A) £500; B) £1,000; C) £10,000; 1) office chair; 2) arm; 3) pelvis.

▶ Unauthorised dumping of industrial waste is illegal. Briefly explain why we should do it anyway.

▶ List three bank scams not expressly prohibited by Japanese law (hint: assassinating the bank manager is NOT one of them).

▶ A washed-up, alcoholic wrestler under your protection is scheduled to fight the current champion in 10 days' time. Who wins?

▶ Under what circumstances would you give your boss a box containing your little finger?