Question
Download Solution PDFयदि 2 पाठ्यक्रम अनिवार्य हैं, तो एक छात्र n पाठ्यक्रमों में से (n - 2) पाठ्यक्रमों को कितने तरीकों से चुन सकता है (n > 4)?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFव्याख्या:
दिया गया है,
पाठ्यक्रमों की संख्या, n > 4
छात्र को n पाठ्यक्रमों में से (n - 2) पाठ्यक्रम चुनने हैं, जिसमें 2 पाठ्यक्रम अनिवार्य हैं
∴ कुल पाठ्यक्रम n - 2 हैं और (n - 2) पाठ्यक्रमों में से चुने जा सकने वाले शेष पाठ्यक्रमों की कुल संख्या (n - 4) है।
∴ आवश्यक तरीकों की संख्या (n-2) C (n-4).
⇒ \(\frac{(n-2)(n-3)}{2}\)
∴ विकल्प d सही है।
Last updated on May 30, 2025
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