AP EAMCET2011MathematicsPermutation and Combination
If ^ (n-1) C₃+ ^ (n-1) C₄> ^n C₃ , then the minimum value of n is
Options
- A5
- B6
- C7
- D8
Correct answer
D. 8
Step-by-step solution
Given, ^ n-1 C₃+ ^ n-1 C₄> ^n C₃ array lc & ^n C₄> ^n C₃ & [ ^n C_r+ ^n C_ r-1 = ^ n+1 C_r ] & n-4>3 & n>7 & n=8 array