0 that has not been solved:
an unsolved mystery
The detective has spent seven years investigating the unsolved crime.
However, many problems have remained unsolved, and many supposed facts need to be revised in the light of recent research.
Puzzles and unsolved identities are resolved, blame is assigned, and peace is reestablished.
Resistance to chemotherapeutic drugs continues to be one of the major unsolved problems in the treatment of cancer.
This is, alas, an unsolved question, open since it was first formulated in the early 1970s.
However, the molecular mechanism by which both cells advance their inner lip (inner mesaxon) around axons several times for myelination remains unsolved.
The victim-centred perspective provided by reports of unsolved crimes had largely disappeared by 1821.
The authors' overview of this area is a considerable advance on earlier attempts, but there are still plenty of unsolved problems.
In the majority of these cases the program will find the explicit form of the conservation law, otherwise it will return unsolved equations.
