Question

Let x = { x / x ∈ N , 10 < x ≤ 30 } A = { X / X is a multiple of 3 } B = {X / X is a multiple of 4 }​

Answer 1

Answer:

x=11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29, 30

A=12,15,18,21,24,27,30

B=12,16,20,24,28

Answer 2

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