NDA Maths Mock Test – 01 – Q22

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Question:

If C (n, 12) = C (n, 8), then C (22, n) is equal to

If C (n, 12) = C (n, 8), then C (22, n) is equal to

Options:

  • 252
  • 231
  • 303
  • 210
  • 252
  • 231
  • 303
  • 210

Correct Answer: b)

Explanation:

‘ “Cra =” Cs “
‘ =n=12+8=20.”C, =” Cy=n=x+tyorx=y
1 Now,
20, = Cy 1
2,2
23
=231. !

‘ “Cra =” Cs “
‘ =n=12+8=20.”C, =” Cy=n=x+tyorx=y
1 Now,
20, = Cy 1
2,2
23
=231. !

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