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0. Let A = (2,4,7) and B=(4,5,6) be triangular fuzzy numbers, ∩d, ∪d denote drastic intersection and union respectively. Then which of the following statements is/are correct? 1. A ∩d B is not normal 2. A ∪d B is not normal 3. A ∩d B is a fuzzy number 4. A ∪d B is a fuzzy number
2 only
1 and 3
1 and 4
All of the above
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