Would you choose a definite £500 or a possible million quid?

Take this simple Observer quiz to find out whether you like to take risks or prefer to err on the side of caution

Are you a risk seeker? Do you know when to hold 'em, when to fold 'em and when to walk away? What would you choose if offered 500 for sure or a gamble with a 15% chance of winning 1,000,000?

Although ostensibly about risk seeking, this test is actually a test of your reasoning ability and, more generally, your intelligence. Now we can make an exception if you have some particularly unusual specific personal circumstances. Perhaps, for example, you owe 500 to a loan shark who will be calling round first thing Monday morning. Perhaps you think all forms of gambling are morally wrong. Or perhaps you think being a millionaire would make you miserable. But if not, you would be crazy not to take the gamble.