यदि समुच्चय A = {1, 3, 5, 7}, समुच्चय B = {1, 4, 7} तो A − B का मान ज्ञात कीजिए। 

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Bihar STET Paper I: Mathematics (Held In 2019 - Shift 1)
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  1. {1, 3, 5}
  2. {3, 5, 7}
  3. {3, 5}
  4. {4}

Answer (Detailed Solution Below)

Option 3 : {3, 5}
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Bihar STET Paper 1 Mathematics Full Test 1
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प्रयुक्त अवधारणा:

A - B = वह अवयव जो A में उपस्थित हैं परन्तु B में नहीं

गणना:

यदि सम्मुचय A = {1, 3, 5, 7}, सम्मुचय B = {1, 4, 7}, 

A - B का मान = {3,5} (वह अवयव जो A में उपस्थित हैं परन्तु B में नहीं)

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