its called a four bagger
A 4 banger
It's called a "bagger" like a "4 bagger" or a "5 bagger", According to FB bowling buddies and a website with other bowling lingo.
The first 4 strikes in a row have been given the name 'hambone' (unofficially of course!)
It is unofficially called a Hambone. This term was coined by PBA announcer Rob Stone. 4-bagger is the name it is commonly called.
You are a god.
There are 4 pins in the back row, 7,8,9 and 10.
There are four (4) bowling pins in the back row of pins in one bowling lane.
Assuming 10-pin bowling, there are 4 pins in the back row, so 4/10ths (40%) of the pins are in the back row.
The (7 - 8 - 9 - 10) are in the back row. That's 4 of the 10. The fraction is 4/10 = 0.4