संख्या 480 के गुणनखंडों की कुल संख्या ज्ञात कीजिए।

  1. 12
  2. 24
  3. 48
  4. 36

Answer (Detailed Solution Below)

Option 2 : 24
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PYST 1: SSC CGL - General Awareness (Held On : 20 April 2022 Shift 2)
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Detailed Solution

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दिया गया है:

दी गई संख्या 480 है।

प्रयुक्त सूत्र:

यदि एक संख्या N का अभाज्य गुणनखंडन = ap × bq × cr × ......

तो, N के गुणनखंडों की कुल संख्या = (p + 1) × (q + 1) × (r + 1) × ......

गणना:

यहाँ

480 का अभाज्य गुणनखंडन = 25 × 31 × 51

इसलिए, गुणनखंडों की कुल संख्या = (5 + 1) × (1 + 1) × (1 + 1)

⇒ 6 × 2 × 2

⇒ 24

480 के गुणनखंडों की कुल संख्या 24 है।

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