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Q.

Find the LCM of 5, 6 and 14.


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a

210

b

30

c

42

d

105 

answer is A.

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Detailed Solution

 Concept: LCM is the least common multiple.
This means that the smallest number is multiplied by two or more numbers.
LCM is calculated by prime factorisation.
We need to find the factors of all the numbers first.
Given numbers are 5, 6 and 14.
Factors of 5 are 5 and 1
Factors of 6 is 2 and 3
Factors of 14 is 2 and 7
The least common multiple of 5, 6 and 14 will be
Question ImageHence, the correct answer is option 1.
 
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