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Listed below are the verified claims for the record listed. |
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Roger Roelofsma (Netherlands) correctly identified the number of letters in 50 Dutch words (each containing between 10 and 30 letters) in
4:39 minutes on 16 July 2022 at a public show during the Mental Calculation World Cup 2022 in Paderborn, Germany. |
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The Book of Alternative records - World records, record breakers and more! |
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