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JEE Mains · Maths · STD 11 - 6. permutation and combination

\(20\) भिन्न संतरों को \(3\) बच्चों में बाँटने के तरीकों, ताकि प्रत्येक बच्चे को कम से कम एक संतरा मिले, की संख्या है____________

  1. A \(170\)
  2. B \(168\)
  3. C \(169\)
  4. D \(171\)
Verified Solution

Answer & Solution

Correct Answer

(D) \(171\)

Step-by-step Solution

Detailed explanation

\(20\) distinct oranges distributed among \(3\) children so that each child gets at least one orange \(=3^{20}-{ }^3 C _1 2^{20}+{ }^3 C _2 1^{20}\) Bonus
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