Countdown - 11th October 1999 - Part 1

Continuing the Quizzing adventure, this is my fifth appearance on the TV quiz "Countdown" in 1999. Richard Whiteley and Carol Vorderman present the quiz based on anagrams and number puzzles; Suzie Dent and Geoffrey Durham preside in Dictionary Corner.
This game is Gary Woodward vs. Jonathan Mearns.

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Another way of getting 508:
100+3=103
10/2=5
103x5=515
515-7=508