This condition is only true for two given numbers. of two or more numbers is greater than or equal to greatest number of given numbers.Ģ) Product of two numbers = Product of their H.C.F. of two co-prime numbers, just multiply the given two numbers.ī) The L.C.M. Quick Revision of prime numbers, composite numbers and co-prime numbers is given below:Ī) It is the greatest number which exactly divides all the given numbers.ī) The H.C.F of two or more numbers is smaller than or equal to the smallest number of given numbers.Ĭ) H.C.F of given numbers divides their L.C.M.ĭ) Two numbers are said to be co-prime if their H.C.F.

Knowing basics will help in understanding this chapter. The least number exactly divisible by each one of the given numbers is called least common multiple.ġ) Before studying this chapter, make sure that the basic concepts of numbers (prime numbers, composite numbers, co-prime numbers, etc) are perfectly understood. H.C.F of two or more numbers is the greatest number which divides each number exactly.ĥ) L.C.M.: (Lowest common multiple). concept is useful in calculating the largest size of tile/room in particular area, largest tape to measure the land, etc.ġ) Factors: Factor is a number which exactly divides other number.Ģ) Multiple: A number is said to be multiple of another number, when it is exactly divisible by other number.ģ) Common multiple: A common multiple of two or more numbers is a number which is exactly divisible by each of them.Įxample: 18 is a common multiple of 2,3,6 and 9Ĥ) H.C.F/G.C.F: (Highest Common Factor / Greatest Common Factor). concept is important to solve problems related to racetracks, traffic lights, etc. L.C.M and H.C.F of two or more numbers help in finding out quick solutions and thus reduce time during exams. This concept is useful in the chapters of time and distance, time and work, pipes and cisterns, etc. The chapter of H.C.F and L.C.M is very important. Video on Problems on H.C.F and L.C.M - shortcuts, tips and tricks H.C.F and L.C.M of numbers Why is H.C.F and L.C.M important?

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