Question: 1. Is A ( B if A = {1, 2, 5, 7} and B = {x: x is a positive integer, x ( 8}? 2.

1. Is A ( B if A = {1, 2, 5, 7} and
B = {x: x is a positive integer, x ( 8}?
2. Is it true that 3 ( {x: x 3}?
3. Are A = {1, 2, 3, 4} and B = {x: x ( 1} disjoint?

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