The lcm of two numbers is 180 and hcf is 2 if one them is 20 find the second number?
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a×b=LCM (a,b) × HCF (a,b)
if a =20 , LCM (a,b)=180, HCF (a,b)=2
20×b = 180×2
20×b= 360
b= 18
therefore the second number is 18
if a =20 , LCM (a,b)=180, HCF (a,b)=2
20×b = 180×2
20×b= 360
b= 18
therefore the second number is 18
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