Answer :
A constraint is a limit that is placed on a solver problem's solution.
Constraints are limitations that are placed on a solver problem's solution. These limitations can include things like minimum or maximum values for certain variables, requirements that certain variables must be equal or related in a certain way, and restrictions on the overall solution space.
In problem-solving, a constraint is a condition or limitation that must be met or satisfied for a solution to be considered valid. Constraints help define the boundaries within which a problem can be solved and guide the selection of feasible solutions.
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