Home › CBSE Class 11 (Commerce) › Mathematics › Permutations and Combinations › The identity C(n, k) = C(n, n - k) can be explai…
The identity C(n, k) = C(n, n - k) can be explained by
Aadding one more object
Bdoubling the full set
Creversing every order
Dusing the complement set
Answer & Solution
Correct answer: D. using the complement set
Choosing k objects to take is the same as choosing the n - k objects to leave behind.
Related questions
Al-Khalil's cryptography book listed words using which idea?A permutation of a finite set is what kind of function on that set?A k-combination of a set S is best described as what?Cauchy's 1815 memoir on substitutions of n elements led to which notion?Which Chinese text used permutation-like hexagrams as early as 1000 BC?How many elements does the symmetric group on 4 objects contain?In how many ways can the letters of BANANA be arranged?A multiset permutation uses each element how many times?