Question

If are the position vectors of three collinear points, then which of the following is true?

(a) vector a = vector(b + c) 

(b) 2 vector a = vector(b + c) 

(c) vector b = vector(c + a)

(d) 4 vector(a + b + c) = 0 vector 

Answer 1

(b) 2 vector a = vector(b + c)