'this stagnant problem' is not a sentence; a sentence requires a subject and a verb. This phrase could be the subject of a sentence if you add a verb:This stagnant problem has bothered us long enough.
The teacher posed the math problem 5 plus 11 and 1/2. I had a problem figuring out the math problem.
It depends on what your sentence is...
The abstract nouns in the sentence are idea and problem.
It is an interrogative sentence.
It is an interrogative sentence.
The sentence that defines the value of the unknowns in a problem is called a let statement
The sentence that defines the value of the unknowns in a problem is called a let statement
"I have a problem." "I" is used when the first person is the subject of the sentence.
The passive is: 'Can this problem be solved?'
the subject is problem and the verb is answer
It is and math problem :))