Two forces, one of 10 N and other 6 N act upon a body. The directions of the forces are unknown; the resultant force on the body is
more than 10 N
between 6 and 16 N
between 4 and 16 N
more than 6 N
if 2 forces are acting in opposite directions, resultant is minimum, viz f1-f2 and when they act in same direction , resultant is maximum, viz f1+f2. so the possible results should lie between f1-f2 and f1+f2.. that is 4N and 16 N