यदि nC15 = nC8 तो n का मान ज्ञात करें।

  1. 24
  2. 23
  3. 21
  4. 20

Answer (Detailed Solution Below)

Option 2 : 23
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अवधारणा:

  • nCr = nCn - r.
  • यदि nCx = nCy तो x + y = n
  • nCr + nCr - 1 = n + 1Cr


गणना:

दिया हुआ: nC15 = nC8

जैसा कि हम जानते हैं, nCx = nCy, तो x + y = n

इसलिए n = 15 + 8 = 23

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