In a typical 3-class seating arrangement the Boeing 777-200LR holds 301 passengers and the Boeing 777-300ER holds 365 passengers.
Boeing 777
There is no A 777. You have confused it with a Boeing number.
You can find the Boeing 777 seating chart here: http://insideflights.com/Airplanes/Boeing_777-seats-reviews-(777).html and information about the Boeing 777 on Wikipedia http://en.wikipedia.org/wiki/Boeing_777#777-200
The Boeing 777 has at least 2 engines.
the Boeing 777 has a twin engine system (2 engines).
A Boeing 777 can carry between 314 and 451 passengers. The Boeing 777 has been in use since June of 1995.
Boeing 777
There are about 700.
The Boeing 777 has 2 engines. These are very powerful Rolls Royce Trent 895.
It depends what type. The Boeing 777-200 holds 305 passengers and the Boeing 777-300ER can hold 365 passengers.
It depends on the model of the plane, and the configuration of seats. Singapore Airlines operates Boeing 777, Airbus A380, Airbus A340, and Airbus A330 aircraft.
two