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CUET · MATHS · PYQ PAPER 2025

A die is tossed 6 times and getting 1 or 5 is considered a success.
The probability of getting at least one success in six tosses is:

  1. A \(\frac{1}{3}\)
  2. B \(\frac{1}{729}\)
  3. C \(\frac{728}{729}\)
  4. D \(\frac{665}{729}\)
Verified Solution

Answer & Solution

Correct Answer

(D) \(\frac{665}{729}\)

Step-by-step Solution

Detailed explanation

\(p = \frac{2}{6} = \frac{1}{3}\) \(q = 1 - \frac{1}{3} = \frac{2}{3}\) \(P(X=0) = \binom{6}{0} \left(\frac{1}{3}\right)^0 \left(\frac{2}{3}\right)^6 = 1 \cdot 1 \cdot \frac{64}{729} = \frac{64}{729}\)…
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