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201.

प्रश्न 2 में दिए प्रत्येक समुच्चय युग्म का सर्वनिष्ट समुच्चय ज्ञात कीजिए।

Answer» Correct Answer - (i) `X nn Y = {1,3}` , (ii) `A nn B = {a}` , (iii) `{3}`
Discussion
202.

यदि `A ={x: x` एक प्राकृत संख्या है और 3 का गुंणज है } तथा B ={x :x संख्या 6 से कम एक प्राकृत संख्या है। } तब `A nn B` ज्ञात करो ।

Answer» Correct Answer - {3}
Discussion
203.

यदि A={1,2,3,5,6,7} तथा B={3,6,7,9,11} दो समुच्चय है, तो `A cup B` तथा `A cap B` को लिखिए

Answer» `A cup B={1,2,3,5,6,7} cup {3,6,7,9,11}`
={1,2,3,5,6,7,9,11}
`A cap B={1,2,3,5,6,7} cap {3,6,7,9,11}`
={3,6,7}
Discussion
204.

`A nn B` का मान ज्ञात करो यदि `A ={1,2,3,4} ,B= {1,4,6,8}`

Answer» Correct Answer - {1,4}
Discussion
205.

यदि A={1,2,3},B={3,4} तथा C={4,5,6} तीन समुच्चय हो, तो `A cup (B cup C)` को लिखिए ।

Answer» यहाँ `(B cup C)={3,4,5,6}`
`A cup (B cup C)={1,2,3} cup {3,4,5,6}`
={1,2,3,4,5,6}
Discussion