Lily Is A Lilypad In A Small Pond. Lilly Doubles Her Size Each Day

Riddle: Lily is a lilypad in a small pond. Lilly doubles her size each day, On the 20th day she covers the whole pond. On what day was Lily half the size of the pond?

Answer: Day 19, it's not 10 because on day 20 she doubled from day 19, so 19 must be half the size of the pond.

Source: https://www.riddles.com/1757

Lily is a lilypad in a small pond. Lilly doubles her size each day, On the 20th day she covers the whole pond. On <a href="/6185">what day</a> was Lily half the size of the pond? — Lily is a lilypad in a small pond. Lilly doubles her size each day by Jeff Busche v1.

Riddle: Lily is a lilypad in a small pond. Lilly doubles her size each day, On the 20th day she covers the whole pond. On <a href="/6185">what day</a> was Lily half the size of the pond? Answer: Day 19, it's not 10 because on day 20 she doubled from day 19, so 19 must be half the size of the pond. — by Jeff Busche v2.