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JEE Mains · Maths · STD 11 - 14. probability

યાદૃચ્છિક રીતે પસંદ કરેલ એક \(3-\) અંકોવાળી સંખ્યામાં ઓછામાં ઓછા બે અંકો અયુગ્મ હોય તેની સંભાવના..............છે.

  1. A \(\frac{19}{36}\)
  2. B \(\frac{15}{36}\)
  3. C \(\frac{13}{36}\)
  4. D \(\frac{23}{36}\)
Verified Solution

Answer & Solution

Correct Answer

(A) \(\frac{19}{36}\)

Step-by-step Solution

Detailed explanation

\(=\) exactly two digits are odd \(+\) exactly there 3 digits are odd For exactly three digits are odd For exactly two digits odd : If \(0\) is used then \(: 2 \times 5 \times 5=50\) If \(0\) is not used then : \({ }^{3} C _{1} \times 4 \times 5 \times 5=300\) Required…
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