Answer (Detailed Solution Below)

Option 4 : 4
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UP TGT Hindi FT 1
125 Qs. 500 Marks 120 Mins

Detailed Solution

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अवधारणा:

कॉम्बिनेटरिक्स:

  • nCr =
  • n! = 1 × 2 × 3 × ... × n
  • 0! = 1


गणना:

दिया गया समीकरण है: 3(6C3) = 10(xC2)

⇒ 

⇒ 

⇒ x(x - 1) = 12 = 4 × 3

x = 4

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