Top 10 'unanswerable' questions revealed Published duration 20 September 2010

image caption Do blondes really have more fun?

"What is the meaning of life?", "Is there a God?" and even "Do blondes have more fun?" - these are apparently the world's trickiest questions.

Internet search engine Ask Jeeves has compiled what it called a top 10 of "unanswerables" in the past decade.

The list is based on some 1.1 billion queries made on the site since its launch in 2000.

Other weighty issues include mortality, love and fame, but "did Tony Soprano die?" also made it on the list.

Ask Jeeves said that this was because many users of the site had been inquiring about what happened to the TV gangster after the final episode of the popular US drama The Sopranos.

The site also said it was launching an "unanswerables" page to help people shed light on some of the most tricky questions.

Since its launch Ask Jeeves - with its trademark butler - has been struggling against more popular search engines, such as Google.