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Grade: 12th pass
        
Problem B-7
 
Also please explain what those small letters mean
3 months ago

Answers : (2)

Arun
22739 Points
							
bN = set of positive multiples of b
cN = set of positive multiples of c
 
bN intersection cN = set of positive multiples of bc
(since, b and c are prime)
 
It is given that:
bN intersection cN = dN = set of positive multiples of d
 
Therefore, bc = d
3 months ago
Vikas TU
9084 Points
							
Hiii 
Assume N = {1,2,3...........}
dN=bNcN={nN:bn,cn}
n:lcm(b,c)n}
nbcn} since lcm(b,c). gcd(b,c) = bc
= bc N 
so, bc = d will be the correct ans.
={nN:lcm(b,c)n}
={nN:lcm(b,c)n}={nN:lcm(b,c)n}
3 months ago
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