Answers

NQ1 - 2, 2 from each of the 50 states

NQ2 - 2 , 25,000 miles

NQ3 - 3, 4 : Lincoln (1865), Garfield (1881), McKinley (1901) and JF Kennedy (1963)

NQ4 - 4, The Channel Tunnel

NQ5 - 4, John Lennon (died 1980 aged 40), Elvis was 42 (1977), Freddie was 45 (1991) and Jacko 50(2009)

NQ6 - 3, 1961

NQ7 - 4, 196

NQ8 - 1, a symbol of perfection and unity