Can you solve it? The count reaches 'twenty, twenty-one'
by Alex Bellos from on (#5C4Y4)
Next year in numbers
UPDATE: For the solutions and further discussion click here.
Count von Count will be fizzing with excitement. For the first time since 1920, the coming year, 2021, consists of two ascending, consecutive numbers. Enjoy this counting date' while it lasts, people! It ain't going to happen again for another hundred and one years.
Today's puzzles reveal more arithmetical patterns concerning 2021.
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