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Mathematics, 09.11.2021 23:30 mykiagamble

U = {x | x € Z, 1 < x ≤ 21} A = {x | x is divisible by 3}
B = {x | x is divisible by 4}
C ={x | the different between the digits of the elements in the universal set is exactly 1}

Does anyone understand what does the set C ask for? I don't understand please help me urgent


U = {x | x € Z, 1 < x ≤ 21} A = {x | x is divisible by 3} B = {x | x is divisible by 4} C ={x

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U = {x | x € Z, 1 < x ≤ 21} A = {x | x is divisible by 3}
B = {x | x is divisible by 4} <...

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