1. In which year did crime novelist Agatha Christie go missing for ten days before being discovered in Harrogate? 2. Which scandalous 20th-century bestseller was originally entitled The Tree And The Blossom? 3. In the Nato phonetic alphabet, how many of the words have a single vowel? 4. Which item of women’s clothing has, for the first time, been deemed acceptable at Royal Ascot? 5. In which year did the campaign of sustained bombing known as Operation Rolling Thunder begin in the Vietnam War? 6. What is the name of the largest bell in Liverpool Cathedral?