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APTITUDE-Problems on H.C.F AND L.C.M

H.C.F AND L.C.M
Facts And Formulae:
1.Highest Common Factor:(H.C.F) or Greatest Common Meaure(G.C.M) :
The H.C.F of two or more than two numbers is the greatest number that divides each of them exactly.
There are two methods :
1.Factorization method: Express each one of the given numbers as the product of prime factors.
The product [...]