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

शब्द \("MEDITERRANEAN"\) के अक्षरों से चार अक्षरों के ऐसे शब्द (चाहे अर्थहीन हों) बनाने हैं जिनका पहला अक्षर \(R\) तथा चौथा अक्षर \(E\) हो, तो ऐसे सभी शब्दों की कुल संख्या है 

  1. A \(110\)
  2. B \(59\)
  3. C \(\frac {11\,!}{(2\,!)^3}\)
  4. D \(56\)
Verified Solution

Answer & Solution

Correct Answer

(B) \(59\)

Step-by-step Solution

Detailed explanation

\(M, EEE, D. I, T, RR,AA,NN\) \(R--E\) Two empty places can be filled with identical letters \([EE, AA, NN] \Rightarrow 3\) ways Two empty places, can be filled with distinct letters \([M, E, D, I, T, R, A, N] \Rightarrow ^8{P_2}\) \(\therefore \) Number of words…
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