Page 1 - Sub-topic-8
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Subject – Mathematics


                                    Chapter 3 – FACTORS AND MULTIPLES

        Sub-topic-8:- Relation between HCF and LCM


        Practice from Composite Book:

        Page 78 (question no. are given as per the book)

        4. The product of two numbers is 2925 and their HCF is 15. Find the LCM of these numbers.

        OBJECTIVE QUESTIONS:


            1.  The product of two numbers is 120.If their H.C.F is 6 what is their L.C.M.
                   a.  20                  b. 21                         c. 6                      d. 11
            2.  The H.C.F of two numbers is 144 and their L.C.M is 2880.F one of the number is 720, find the
               other number.
               a.  576                      b. 574                       c. 456                 d. 720
            3.  The L.C.M of two co-prime numbers is equal to their _________.
               a.  H.C.F                   b. sum                       c. product          d. none of these
            4.  Two numbers are said to be co – prime ,if their H.C.F is _______
               a.  2                          b. number itself           c. 1                   d. 3
            5.  H.C.F x L.C.M = ___________
               a.  First number  b. second number c. product  of the given number d. none of these
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