What is the vector whose magnitude is 3, and is perpendicular to `hat(i)+hat(j) and hat(j)+hat(k)`?

A vector perpendicular to hat(i)+hat(j)+hat(k) is

A vector perpendicular to hat(i)+hat(j)+hat(k) is

A vector of magnitude 5 and perpendicular to hat(i) - 2 hat(j) + hat(k) and 2 hat(i) + hat(j) - 3 hat(k) is

A vector perpendicular to (hat(i)+hat(j)+hat(k)) and (hat(i)-hat(j)-hat(k)) is :-

Find a vector of magnitude 15, which is perpendicular to both the vectors (4hat(i) -hat(j)+8hat(k)) and (-hat(j)+hat(k)).

Find a vector of magnitude 15, which is perpendicular to both the vectors (4hat(i) -hat(j)+8hat(k)) and (-hat(j)+hat(k)).

Find a vector of magnitude 15, which is perpendicular to both the vectors (4hat(i) -hat(j)+8hat(k)) and (-hat(j)+hat(k)).

Find a vector of magnitude 7 units, which is perpendicular to two vectors : 2hat(i)-hat(j)+hat(k) and hat(i)+hat(j)-hat(k) .