unsolvable problem
unsolvable issue
unsolvable equation
unsolvable mystery
unsolvable puzzle
unsolvable challenge
unsolvable dilemma
unsolvable case
unsolvable conflict
unsolvable question
the problem seemed unsolvable at first.
many people believe that some mysteries are unsolvable.
he faced an unsolvable dilemma in his career.
she found the math equation to be unsolvable.
they considered the issue to be unsolvable without further research.
his unsolvable questions left the teacher speechless.
the team was frustrated by the unsolvable technical issues.
some believe that life itself is an unsolvable puzzle.
the unsolvable nature of the riddle intrigued the audience.
despite their efforts, the conflict remained unsolvable.
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