A red light flashes every 10 seconds a yellow light flashes every 24 seconds a blue light flashes every 30 seconds how much time will they flash at the same time in 10 minutes.

Ikinda have to see the graph to be sure of this.

False  the vector difference between first two points is (3,,3)=(2,2)  the vector difference between second two points is (4,,5)=(1,2)  vectors (2,2) and (1,2) are not parallel so:   false