Which option is most appropriate for the following Mathematical Reasoning and Aptitude concept? If A={1,2,3} and B={3,4}, A∪B has Select the correct answer.
निम्नलिखित गणितीय तर्क एवं अभिक्षमता की अवधारणा के लिए कौन-सा विकल्प सबसे उपयुक्त है? यदि ={1,2,3} और B={3,4}, तो ∪B है। सही उत्तर चुनिए।
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