PUZZLE #45SATURDAY, OCTOBER 31, 2026

The answers

01SPORT
How fast was the fastest recorded tennis serve?
163 mph
About 163 mph. The returner has roughly half a second to decide, move and swing — less time than it takes to blink twice.
50% of players got it inside their bracket
02SPACE
How many Earth years does Neptune take to orbit the Sun?
165 years
About 165 years. Discovered in 1846, it completed its first observed orbit only in 2011.
33% of players got it inside their bracket
03PEOPLE
What share of the world’s people have brown eyes?
75%
Somewhere around 70–80%. Blue comes a distant second, at about a tenth.
33% of players got it inside their bracket
04MUSIC
How many pipes does the world’s largest pipe organ have?
33,000 pipes
About 33,000, in Boardwalk Hall in Atlantic City — the biggest are 64 feet tall, the smallest the size of a pencil.
33% of players got it inside their bracket
05THE BODY
How wide is a human egg cell?
0.1 millimetres
About a tenth of a millimetre — the largest cell in the human body, and just visible to the naked eye.
83% of players got it inside their bracket