can we use a 3 step ladder and stand on the top rujng

Standing on the top rung of a ladder can be hazardous and is generally not recommended. Ladders should be inspected before each use for defects, and any faulty ladders should be repaired or discarded. When using a ladder, always face the ladder and keep your body centered between the side rails. It is also important to maintain three points of contact while on the ladder and to avoid carrying objects in your hands. Hoist materials or attach tools to a belt instead.