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| Q. |
If A = {a,b,{a,c}, ∅}, then A - {a,c} is |
| A. | {a, b, ∅} |
| B. | {b, {a, c}, ∅} |
| C. | {c, {b, c}} |
| D. | {b, {a, c}, ∅} |
| Answer» A. {a, b, ∅} | |
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