Question

An urn contains 25 balls numbered 1 to 25. Suppose getting an odd numbered ball is considered a 'success'. If two balls are drawn from the urn with replacement. Find the probability of getting no success.

• A. $\frac{160}{625}$
• B. $\frac{481}{625}$
• C. $\frac{312}{625}$
• D. $\frac{144}{625}$

Answer 1

The correct option is D $\frac{144}{625}$

$P\left(nosuccess\right)=q\times q=\frac{12}{25}\left(\frac{12}{25}\right)=\frac{144}{625}$