The points with position vectors `60hati+3hatj,40hati-8hatj, ahati-52hatj` are collinear if (A) `a=-40` (B) `a=40` (C) `a=20` (D) none of these

The points with position vectors 10hati+3hatj,12hati-5hatj and ahati+11hatj are collinear, if a is equal to

If the points with position vectors 20 hati + p hatj , 5 hati - hatj and 10 hati - 13 hatj are collinear, then p =

If the points with position vectors 20 hati + p hatj , 5 hati - hatj and 10 hati - 13 hatj are collinear, then p =

The points with position vectors 60 i+3j ,40 i-8j ,a i-52 j are collinear if a. a=-40 b. a=40 c. a=20 d. none of these

Show that the vectors 2hati-3hatj+4hatk and -4hati+6hatj-8hatk are collinear.

If points hati+hatj, hati -hatj and p hati +qhatj+rhatk are collinear, then

The points with position vectors alpha hati+hatj+hatk, hati-hatj-hatk, hati+2hatj-hatk, hati+hatj+betahatk are coplanar if

If the four points with position vectors -2hati+hatj+hatk, hati+hatj+hatk, hatj-hatk and lamda hatj+hatk are coplanar then lamda= (A) 1 (B) 2/3 (C) -1 (D) 0

The vectors 2hati+hatj-4hatk and ahati+bhatj+chatk are perpendicular, if

The point having position vectors 2hati+3hatj+4hatk,3hati+4hatj+2hatk and 4hati+2hatj+3hatk are the vertices of