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kirbykirby
 one year ago
Best ResponseYou've already chosen the best response.3It just means it is not prime, meaning there is a divisor that is not just 1 and itself

kirbykirby
 one year ago
Best ResponseYou've already chosen the best response.3For example, 2, 3, 5, 7, 11 are prime but 4, 6, 15, 21 are composite (2*2=4, 2*3=6, 3*5=15, 7*3=21)

niikofi12
 one year ago
Best ResponseYou've already chosen the best response.0one mor fn...if u hv X={1,2,3,...,10} n aRb( a relates b) such dat (a+b) is composite. wat r the elements of the relation?

niikofi12
 one year ago
Best ResponseYou've already chosen the best response.0is it (1,3),(1,5),(1,7),(1,8),...?

kirbykirby
 one year ago
Best ResponseYou've already chosen the best response.3yes it would be any pair (a,b) such that adding both together "a+b" gives a composite number Although I'm not too sure if the sum can't be greater than 10. I never saw this "Rb" notation. Does it say anywhere that (a+b) belongs to X ?

niikofi12
 one year ago
Best ResponseYou've already chosen the best response.0i think so cuz it says "... and R a relation on X defined by aRb:a+b is composite"

niikofi12
 one year ago
Best ResponseYou've already chosen the best response.0cuz X is limited on d range 110

kirbykirby
 one year ago
Best ResponseYou've already chosen the best response.3ok then I would think that the sum can't exceed 10 (but I am not 100% sure o_o)

niikofi12
 one year ago
Best ResponseYou've already chosen the best response.0me neither. thanks anyway

kirbykirby
 one year ago
Best ResponseYou've already chosen the best response.3but fairly certain. Otherwise I think you'd have too many pairs to list lol
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