Question

What is the greatest common divisor of the three integers 144, 216, and 360?
(A) 12
(B) 18
(C) 24
(D) 36
(E) 72

Answer 1

Answer:E.72

Step-by-step explanation: Using the method division we can easily find the HCF.    144/2, 216/2, 360/2   2

            72/2, 108/2, 180/2     2

            36/2, 54/2, 90/2        2

            18/3, 27/3, 45/3         3

            6/3, 9/3, 15/3             3

            2, 3, 5                      

So now we can come to a conclusion, 2*2*2*3*3= HCF =72