Two cards are drawn successively with replacement from a well-shuffled deck of $52$ cards. Find the probability distribution of the number of aces.

Vedclass pdf generator app on play store
Vedclass iOS app on app store
(N/A) Let $X$ be the random variable representing the number of aces obtained in two draws with replacement. The possible values for $X$ are $0, 1, 2$.
The probability of drawing an ace in a single draw is $p = \frac{4}{52} = \frac{1}{13}$.
The probability of not drawing an ace is $q = 1 - p = 1 - \frac{1}{13} = \frac{12}{13}$.
Since the draws are independent (with replacement),we use the binomial distribution $P(X=k) = \binom{n}{k} p^k q^{n-k}$ where $n=2$:
$P(X=0) = \binom{2}{0} (\frac{1}{13})^0 (\frac{12}{13})^2 = 1 \times 1 \times \frac{144}{169} = \frac{144}{169}$
$P(X=1) = \binom{2}{1} (\frac{1}{13})^1 (\frac{12}{13})^1 = 2 \times \frac{1}{13} \times \frac{12}{13} = \frac{24}{169}$
$P(X=2) = \binom{2}{2} (\frac{1}{13})^2 (\frac{12}{13})^0 = 1 \times \frac{1}{169} \times 1 = \frac{1}{169}$
The probability distribution is:
$X$$P(X)$
$0$$\frac{144}{169}$
$1$$\frac{24}{169}$
$2$$\frac{1}{169}$

Explore More

Similar Questions

The probability that a student gets distinction in a Mathematics test is $\frac{2}{3}$. If five such tests are conducted over a certain period of time,then the probability that he gets distinction in at least $3$ tests is

If five dice are thrown simultaneously, then the probability that at least three of them show the same numbered face is

$A$ random variable $X$ follows a binomial distribution in which the difference between its mean and variance is $1$. If $2 P(X=2)=3 P(X=1)$,then $n^2 P(X>1)=$

If $X$ follows a binomial distribution with parameters $n = 6$ and $p$. If $9P(X = 4) = P(X = 2)$,then $p = $

For a binomial distribution,the mean and variance are $6$ and $4$ respectively. Find the value of $n$.

Difficult
View Solution

Vedclass Products

For Students

Vedclass Test Series

Mock tests in real JEE/NEET style with performance analysis. 5-day free trial.

Start Free Trial
For Teachers

Exam Paper Generator

Generate Set A/B/C/D exam papers from 7.5L+ questions in 2 minutes. 3 chapters free.

Try Free
For Institutes

Online Exam Module

Live online exams with unlimited students, 360° analytics & white-label branding.

See Demo