All the three concurrent forces acting on a body will not produce equilibrium.
The given parameters:
<em>1. 1 N, 3 N and 5 N</em>
<em>2. 2N, 2N and 2 N</em>
<em>3. 3N, 4N and 5 N</em>
<em>4. 4N, 4N and 5 N</em>
Concurrent forces lie on the same plane and their line of action pass through a common point.
A body under concurrent forces is in equilibrium if the resultant of the forces on the body is zero.

where;
is the equilibrant force
First set of concurrent forces;

Second set of concurrent forces;

Third set of concurrent forces;

Fourth set of concurrent forces;

Thus, we can conclude that all the three concurrent forces acting on a body will not produce equilibrium.
Learn more about concurrent forces here: brainly.com/question/20165540