AP EAMCET202318 May 2023Morning ShiftMathematicsPermutation and CombinationActual
The least value of n for which ^ (n-1) C₂+ ^ (n-1) C₃> ^n C₂ is
Options
- A7
- B4
- C5
- D6
Correct answer
D. 6
Step-by-step solution
^ n-1 C₂+ ^ n-1 C₃> ^n C₂ ^n C₃> ^n C₂ n ! 3 !(n-3) ! > n ! 2 !(n-2) ! 1 3 1 (n-2) aligned & n -2>3 n >5 & n =6 aligned