How many airplanes were used in the 9.11 terrorist attack?

Question: How many airplanes were used in the 9.11 terrorist attack?

Options:

2
4
3
1

Correct answer:

4

Other game answers:
Find the answers to guess the gif, logo quiz 2015, emoji puzzle and emoji nation.
You can find other questions and answers of trivia crack at triviacrackcheats.org (other languages are also available, for this game).