JEE Advance - Mathematics (1998 - No. 5)

For three vectors $$u,v,w$$ which of the following expression is not equal to any of the remaining three?

$$\,u \bullet \left( {v \times w} \right)$$

$$\left( {v \times w} \right) \bullet u$$

$$\,v \bullet \left( {u \times w} \right)$$

$$\left( {u \times v} \right) \bullet w$$