Example : Suppose tV are unit vectors in ° such that iI V 2 ),Vvek. Then decide the correct sa:emerts in the tolowing (CSIR-NET MA June 2016) ) ,are muruauy rthogonal. V, 15 a basis for . 3) V, are not mutually orthogonal. 4) At most n-I of the elements in the set can be orthogonal.