"future problems" or "problems of future" - which phrase should I choose and how should I place the articles?

Question

Sentence with "future problems"

Mahatama Gandhi didn't solve

1. all the future problems but he did solve problems
2. all future problems but he did solve problems
3. all the future problems but he did solve the problems

of his own age.

Sentence with "problems of future"

Mahatama Gandhi didn't solve

1. all the problems of future but he did solve the problems
2. all problems of future but he did solve problems
3. all the problems of future but he did solve problems
4. all the problems of the future but he did solve problems

of his own age.

Considering formal English usage which of the above sentences is correct ? I searched for the above sentence in google books and found various versions so couldn't get a clear idea which one is correct.

Answer 1

Mahatama Gandhi didn't solve all the problems of the future but he did solve problems of his own age.

This is what I feel is the most appropriate with respect to actual meaning. Here is what the above sentence means

Mahatma Gandhi solved some problems They were problems of his own age Maybe he also solved some problems of the future But he did not solve all the problems of the future

REASONING:

1. We do not know if he solved all the problems of his age. The article "the" is used to refer to something we have prior knowledge about. If I said "I know about the problems in your life", means I know about all the problems, whereas saying "I know about problems in your life" means I know about some for sure. I may or may not know them all, but I know at least one.

2. I also referred to "the" future because we know about the existence of the word future, its meaning and also know that anything happening one second from when you have finished reading this comment is something that would happen in the future, with respect to the state of you when you began reading this comment.

Note: Mahatma Gandhi may have known about the problems. But the discussion here is about the sentence which talks about the act of solving the problems, and he did not solve them all, which is why it is more appropriate to say that he solved some problems of his own age, or in short "he did solve problems of his own age "