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): $105$