If `veca=4hati-hatj+hatk, vecb=2hati+hatj+7hatk, vec c= -3hati-4hatj+2hatk` and `vecd=hati+hatj+hatk` then find the value of `3veca+2vecb-4vec c -vecd`

If veca=2hati+3hatj-hatk, vecb= -hati+2hatj-4hatk, vec c =hati+hatj+hatk , then find the value of (veca xx vecb)*(veca xx vec c) .

If veca=hati-2hatj+3hatk and vecb=-2hati+hatj-2hatk , then the value of |veca xx vecb| is -

Given veca = hati-hatj+hatk and vecb = 2hati-4hatj-3hatk , find the magnitude of veca

If veca=hati-2hatj+3hatk, vecb=2hati+hatj-2hatk, vec c=3hati+2hatj+hatk , find veca xx (vecb xx vec c)

Let veca=hati+hatj+2hatk, vecb=2hati+2hatj, vec c=3hati+5hatj-2hatk and vecd=-hatj+hatk , then the ratio of the modulis of the vectors vecb-veca and vecd-vec c is -

If veca=hati-2hatj+3hatk, vecb=2hati+hatj-2hatk, vec c=3hati+2hatj+hatk , find (veca xx vecb)xxvec c