Find the greatest number that exactly divides 168 and 980.
73
21
28
36
Clearly, the required number = HCF of 168 and 980
By long division, we get
Hence, H.C.F of 168 and 980 is 28. So, the number that divides 168 and 980 is 28.
Find the greatest number that exactly divides 180 and 452.