Two vectors $\overrightarrow A $and $\overrightarrow B $lie in a plane, another vector $\overrightarrow C $lies outside this plane, then the resultant of these three vectors i.e.,$\overrightarrow A + \overrightarrow B + \overrightarrow C $
Can be zero
Cannot be zero
Lies in the plane containing $\overrightarrow A + \overrightarrow B $
Lies in the plane containing $\vec C$
Two vectors $\overrightarrow A $and $\overrightarrow B $lie in a plane, another vector $\overrightarrow C $lies outside this plane, then the resultant of these three vectors i.e.,$\overrightarrow A + \overrightarrow B + \overrightarrow C $
If $\vec C$ lies outside the plane then resultant force can not be zero.