Sentence examples for then problem from inspiring English sources

Then problem No. 2 appeared.

Then problem 1 becomes.

Then problem (2.6) is solvable.

Then problem (1.1) admits solutions.

Then problem (1.1) has infinitely many solutions.

Then problem (3.19) has no positive solutions.

then problem (3.3) admits unique solution.

Then problem (3.1) has a positive solution.

Then problem (1) possesses a nontrivial solution.

Then problem (1.1) admits a solution.

Then problem G has a solution.