No, because anything God has done or will do is fair.  I don't remember the passages at the moment but there are some that would answer your question.

No - Gandhi is not in Hell or No - God is fair.

If the former, Gandhi did not believe in Christ, and the basic tenet of xtianity is if u'r an unbeliever, you are damned.

If the latter, let me give a concrete example:

I am the greatest tightrope walker in the world. I invited two people to witness my final act - the first person, let us call him Saddam, has watched all my shows since i began my career. He knows all of my capabilities. The second person, let us call him Osama, lived in isolation and away from technology and civilization - he does not know me nor my talents.

I then proposed for them to join me in my feat by riding in a wheelbarrow and i shall push them from one end to another. I will give a million dollars to that which trusts me.

Saddam, aware of my greatness, decided to do it. Osama, fearing for his life, declined. I gave the million dollars to Saddam.

He was a hindu and he did not know Jesus Christ. Ergo, he's in hell.

But he was good to his fellow man - advocating passive resistance and non-violence.

Extending my question, what about the cavemen that didn't know Jesus?

What if a person was born in an island full of people without any knowledge of God nor Jesus, and he lived in isolation - will he still be damned?

Am i right if i say that this is unfair?