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Q.

If HCF of two positive integers is 5 and their product is 150 . Then their LCM is


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a

10

b

20

c

30

d

40 

answer is C.

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Detailed Solution

Given the HCF of two positive integers is 5 and their product is 150.
We have to find the LCM.
According to the question we have HCF=5,a×b=150   Then using formula a×b=HCF×LCM   we get
  150=5×LCM ⇒LCM=30  
If HCF of two positive integers is 5 and their product is 150  then LCM =30  .
So, LCM of the two numbers is 30.
Hence option 3 is correct.
 
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