Normally there are 2 but you can have up to 4 finger holes .on a bowling ball fpr approval of the USBC
There Are 3 holes in a ten-pin bowling ball.
There are three holes drilled into a typical bowling ball. These are for the thumb, the index finger, and the forefinger. Occasionally there will be added holes, but this is very rare.
The circumference of a bowling ball can not be increased.
Its 3 so what u think
The most common number of holes in a bowling ball are 2 finger holes and a thumb hole. Sometimes there is a counter weight hole and sometimes there is a hold for the remaining fingers.
It depends on the person's grip, style of bowling, hand strength and intention. They are termed as finger/thumb pitch.
Zero, the ball is smaller than normal bowling balls and it fits into your hand so you don't need finger holes in order to roll it.
In tenpin bowling, the circumference of a bowling ball is not to exceed 2 feet, 3 inches.
There is usually 3 holes in a Ten Pin Bowling Ball. 1 large hole for your thumb and 2 smaller holes for your middle and ring finger. Some bowlers may have different numbers of holes based on their bowling style.