Chat show quiz stumps Cameron

David Cameron was subjected to a random quiz on British culture and history as he appeared on one of the USA's most influential TV chat shows, David Letterman.

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Cameron 'sorry he didn't do better' on Letterman quiz

I'm a history obsessive, so I'm sorry I didn't do better.

I think, when I get home and do my children's homework, maybe I need to sit down and do a little bit extra myself.

– David Cameron

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