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ConradCHESS .. amsterdam .. logic .. IM Conrad Goodman

5% of Amsterdam's 735,000 residents have unlisted phone numbers.
If you randomly select 100 names from Amsterdam's phone directory,
approximately how many of those names would have unlisted numbers?

Congratulations to these solvers as of
Danny Blanco, Albert Frank, Joshua Green, Chris Magson,
Graham McDonald, Steve Steppe, Luc Vingerhoets and Brian Wood.

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