Question

Which one of the following is true for all choices of p,q , r.

a) pxq+qxr+rxp=0

b) (p.q)r+9q.r)p+(r.p0q=00

c) p.(qxr)+q.(rxp)+r.(pxq)=0

d) px(qxr)+qx(rxp)+rx(pxq)=0​

Answer 1

Answer:

b

Explanation:

b