Reciprocals of Odd Numbers adding to 1/Mistake

Source Work

1986: David Wells: Curious and Interesting Numbers:

The Dictionary
$105$


1997: David Wells: Curious and Interesting Numbers (2nd ed.):

The Dictionary
$105$


Mistake

There are $4$ ways of representing $1$ as the sum of odd reciprocals, using only $9$ of them ...


There are in fact $5$ such ways, as can be seen in Reciprocals of Odd Numbers adding to 1.


Sources

  • 1986: David Wells: Curious and Interesting Numbers ... (previous) ... (next): $105$
  • 1997: David Wells: Curious and Interesting Numbers (2nd ed.) ... (previous) ... (next): $105$
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