COMEDK · Maths · 36. Probability
A bag contains 3 white, 4 black, 2 red balls. If 2 balls are drawn at random, then the probability that both the balls are white is
- A \(\frac{1}{18}\)
- B \(\frac{1}{36}\)
- C \(\frac{1}{12}\)
- D \(\frac{1}{24}\)
Answer & Solution
Correct Answer
(C) \(\frac{1}{12}\)
Step-by-step Solution
Detailed explanation
Total number of balls \(=9\) Probability of drawn two white balls \[ \frac{3}{9} \times \frac{2}{8}=\frac{1}{12} \]
See the Complete Solution
Get step-by-step explanations for this and 2.5 Lakh+ more JEE, NEET & CET questions.
- Unlock all solutions
- Practice the full chapter
- Track accuracy across PYQs
4.8 rated on Google Play · 14,000+ reviews
More questions from Maths
- Two lines \(\dfrac{x-1}{2}=\dfrac{y+1}{3}=\dfrac{z-1}{4}\) and \(\dfrac{x-3}{1}=\dfrac{y-k}{2}=\dfrac{z}{1}\) intersect at a point. Then the value of ' \(k\) ' isCOMEDK 2025 Medium
- \(\int \frac{x^{3}-1}{x^{3}+x} d x=\)COMEDK 2015 Medium
- If \(f(x)=\left\{\begin{array}{cl}2 \sin x & ;-\pi \leq x \leq \frac{-\pi}{2} \\ a \sin x+b & ;-\frac{\pi}{2} < x < \frac{\pi}{2} \quad \text { and it is } \\ \cos x & ; \frac{\pi}{2} \leq x \leq \pi\end{array}\right.\) continuous on \([-\pi, \pi]\), thenCOMEDK 2023 Medium
- In the group \(G=\{1,5,7,11\}\) under multiplication modulo 12, the solution of \(7^{-1} \underset{12}{\times}(x \underset{12}{12} 11)=5\) is \(x=\)COMEDK 2016 Hard
- The area of the region in the first quadrant enclosed by the \(x\)-axis, the line \(x = \sqrt{3}\,y\) and the circle \(x^2 + y^2 = 4\) isCOMEDK 2026 Medium
- Which of the following is a singleton set?COMEDK 2023 Easy
More PYQs from COMEDK
- If the matrix \(A\) is such that \(A\left(\begin{array}{cc}-1 & 2 \\ 3 & 1\end{array}\right)=\left(\begin{array}{cc}-4 & 1 \\ 7 & 7\end{array}\right)\) then \(A\) is equal toCOMEDK 2024 Medium
- What would be the products obtained when a mixture of p-Methoxy benzaldehyde and Methanal are heated with \(50 \%\) concentrated Caustic soda solution?COMEDK 2023 Medium
- When sulphur dioxide is passed in an acidified \(\mathrm{K}_{2} \mathrm{Cr}_{2} \mathrm{O}_{7}\) solution, the oxidation state of sulphur is changed fromCOMEDK 2017 Easy
- The domain of the function \(y=\sqrt{x-2}+\sqrt{1-x}\) isCOMEDK 2014 Easy
- If \(A=\left[\begin{array}{lll}1 & 1 & 1 \\ 1 & 2 & 3 \\ 1 & 3 & 4\end{array}\right], B=\left[\begin{array}{c}7 \\ 16 \\ 22\end{array}\right], X=\left[\begin{array}{c}x \\ y \\ z\end{array}\right]\) and \(A X=B\), then \(z\) is equal toCOMEDK 2012 Easy
- Two circular coils of radius '\(a\)' and '\(2 a\)' are placed coaxially at a distance ' \(x\) and '\(2 x\)' respectively from the origin along the \(\mathrm{X}\)-axis. If their planes are parallel to each other and perpendicular to the \(\mathrm{X}\) - axis and both carry the same current in the same direction, then the ratio of the magnetic field induction at the origin due to the smaller coil to that of the bigger one is:COMEDK 2024 Medium