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

કક્ષા 2 ના વિશિષ્ટ શ્રેણિકોની સંખ્યા, જેના ઘટકો ગણ \(\{2,3,6,9\}\) માંથી છે, તે __________ છે.

  1. A 32
  2. B 34
  3. C 36
  4. D 38
Verified Solution

Answer & Solution

Correct Answer

(C) 36

Step-by-step Solution

Detailed explanation

\(\left|\begin{array}{ll} \mathrm{a} & \mathrm{~d} \\ \mathrm{~b} & \mathrm{c} \end{array}\right|=\mathrm{ad}-\mathrm{bc} \Rightarrow \mathrm{ad}=\mathrm{bc}\) Case-I Exactly 1 no. is used \(\Rightarrow \text { All singular }={ }^4 \mathrm{C}_1\) Case-II Exactly 2 no. is used…
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