plural of three body problem

plural of private language problem

plural of chicken-and-egg problem

The problem posed by ironic process theory, where (for example) explicitly trying not to think about a white bear makes one more likely to think of it.

plural of art gallery problem

A visibility problem in computational geometry, dealing with whether a number of points in a polygon can collectively "see" (by line segments akin to a person's line of sight) the whole interior of the polygon.

plural of Monty Hall problem

(calculus) the problem of solving a (set of) ordinary differential equations accompanied by the requirement that the function sought (and possibly also one or more of its derivatives), taken for some value, equals some other specific value; graphically, (for example) the problem of finding that antiderivative of some function that passes through a particular point

plural of thundering herd problem

(computing theory) The undesirable situation where a large number of processes waiting for an event are awoken whenever the event occurs, and then engage in a conflict over which process handles the event.