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CUET · MATHS · PYQ PAPER 2023

A die is thrown again and again until three sixes are obtained. The probability of obtaining third six in sixth throw of the die is:

  1. A 1/23328
  2. B 625/23328
  3. C 25/36
  4. D 25/23328
Verified Solution

Answer & Solution

Correct Answer

(B) 625/23328

Step-by-step Solution

Detailed explanation

\( P(\text{2 sixes in 5 throws}) = C(5, 2) \left(\frac{1}{6}\right)^2 \left(\frac{5}{6}\right)^3 = 10 \times \frac{1}{36} \times \frac{125}{216} = \frac{1250}{7776} \)…
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