the hardest i can think of is "What is the answer to this question?"
is there a god. that's the hardest science question!
The hardest question is too difficult to conjure.
The hardest question to answer is subjective and varies from person to person. It could be a deeply personal question, a philosophical quandary, or a complex ethical dilemma that challenges one's beliefs and values.
Now that is a HARD question!
the hardest question to ask is as follows, Mr. 'Blank', may I have your permission to marry your daughter?
The hardest question in the world is subjective and can vary from person to person. Some philosophical questions, such as the meaning of life or the nature of consciousness, are often considered challenging to answer.
This question!
It depends on the real question. If meant literally, then yes, women are allowed on submarines. They can visit some submarines. If the question is, "Are women allowed to serve/work on submarines?" then it depends on the country. In the Royal Navy (UK) they are not allowed to serve at present. The United States, however, is gearing up to allow some women officers to serve aboard U.S. Navy nuclear submarines.
The hardest rock is PANTERA, or Diamonds. Depending on your question.
What is outside the universe.
Do you have an STD.