LCM of two numbers is 120 and their HCF is 10. Which one of the following be the sum of two numbers?
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Answer:
Numbers= 10x and 10y
where x and y are prime to each other,
LCM=10xy
=10xy=120=xy=12
possible pair =(3,4)
sum of numbers
=10multyply 3+10 multiply 4
=70
as x and y are prime to each other.
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