There are ten pins in ten pin Bowling as that is the nature of that sport. In 5 pin bowling, there are 5 pins.
There are ten pins in tenpin bowling. That is why it is called ten-pin bowling.
ten pins on a Bowling lane
Bowling, and you play it at a bowling alley
Bowling in a bowling alley.
No tin pins, ten in ten pin
In tenpin bowling, there are ten pins per lane. In 9 pin there are nine. In 5 pin there are five.