A four - digit number is formed by using the digits 1, 2, 4, 8 an… - Vidyadip

Question

A four - digit number is formed by using the digits 1, 2, 4, 8 and 9 without repitition. If one number is selected from those numbers, then what is the probability that it will be an odd number?

$\frac{1}{5}$
$\frac{2}{5}$
$\frac{3}{5}$
$\frac{4}{5}$

✓

Answer

$\frac{2}{5}$

Solution:
Total number of outcomes = 5 × 4 × 3 × 2 = 120
he number of favourable cases = 2 (4 × 3 × 2) - = 48 (i.e., odd numbers)
herefore,Required probability $=\frac{48}{120}=\frac{2}{5}.$

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "M.C.Q (1 Marks)" from Probability→Probability — all question types→MATHS STD 12 Science question papers→Rajasthan Board STD 12 Science question papers→Rajasthan Board question paper generator→

Similar questions

In a binomial distribution, the probability of getting success is $\frac{1}{4}$ and standard deviation is 3. Then, its mean is:

6
8
12
10

If a matrix A is such that $3A^3 + 2A^2 + 5A + I = 0,$ then $A^{-1}$ equal to:

Determinant $\left|\begin{array}{cc}1 & \log _b a \\ \log _a b & 1\end{array}\right|=$

Let $\text{A}=\begin{vmatrix}1&\sin\theta&1\\-\sin\theta&1&\sin\theta\\-1&-\sin\theta&1\end{vmatrix},$ where $0\leq\theta\leq2\pi.$ Then:

The function f(x) = cot x is discontinuous on the set

$\int\frac{9\text{x}}{9\text{x}^2+1}=$

$\frac{1}{3}\tan^{-1}(2\text{x})+\text{C}$
$\frac{1}{3}\tan^{-1}\text{x}+\text{C}$
$\frac{1}{3}\tan^{-1}(3\text{x})+\text{C}$
$\frac{1}{3}\tan^{-1}(6\text{x})+\text{C}$

Consider a non-empty set consisting of children in a family and a relation R defined as aRb if a is brother of b. Then, R is:

Symmetric but not transitive.
Transitive but not symmetric.
Neither symmetric nor transitive.
Both symmetric and transitive.

The corner points of the feasible region determined by the system of linear inequalities are $(0, 0), (4, 0), (2, 4),$ and $(0, 5).$ If the maximum value of $z = ax + i by,$ where $a, b > 0$ occurs at both $(2,4)$ and $(4,0)$, then:

If $\vec{a}, \vec{b}$ and $(\vec{a}+\vec{b})$ are all unit vectors and $\theta$ is the angle between $\vec{a}$ and $\vec{b}$, then the value of $\theta$ is :

The given table shows the number of cars manufactured in four different colours on a particular day. Study it carefully and answer the question.

	Number of cars manufactured
Colour	Vento	Creta	WagonR
Red	65	88	93
White	54	42	80
Black	66	52	88
Sliver	37	49	74

What was the total number of black cars manufactured?