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Question

Find the LCM of  14, 25 and  720.


  1. 14

  2. 12

  3. 114

  4. 720


Solution

The correct option is A

14


The Least Common Multiple (LCM) of a group of numbers is the smallest number that is a multiple of all the numbers.
LCM of fractions =LCM of numeratorsHCF of denominators
LCM of numerators 1, 2, and 7 = 14.
HCF of denominators 4, 5 and 20 = 1.
LCM of the given numbers =141=14

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