Question

find the HCF and LCM of 6 and 20
by prime factorisation metthod.​

Answer 1

Answer:

to find out the lcm and hcf of 6 and 20 using prime factorizing method ,

 

we first take out the prime factors of both numbers

6= 2 * 3  

20= 2 * 2 * 5

 

for hcf, we consider only the common factors of two numbers , which in this case is only 2  

 

therefore hcf = 2

 

and for lcm , we consider all the factors raise to power of highest value mentioneds among the two numbers  

therefore lcm is  = 22 * 3* 5 = 60

Step-by-step explanation:

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