Question
Define an elementary event.
✓
Answer
What are the meanings of elementary event? The word elementary means simple, non decomposable into elements or other primary constituents and the word event means something that result.
Definition: An elementary event is any single outcome of a trial.
Elementary events are also called simple events.
To illustrate the definition, let us take examples:
$1.$ In the experiment of tossing a coin, the possible outcomes $H$ and $T$.
Any one outcome like $H$ is called an elementary event.
$2.$ In the experiment of rolling a dice, the possible outcomes are $1, 2, 3, 4, 5$ and $6$.
Any one outcome like $4$ is called an elementary event.
Note that $H$ stands for getting a head and $T$ stands for getting a tail in the experiment of tossing a coin.
Definition: An elementary event is any single outcome of a trial.
Elementary events are also called simple events.
To illustrate the definition, let us take examples:
$1.$ In the experiment of tossing a coin, the possible outcomes $H$ and $T$.
Any one outcome like $H$ is called an elementary event.
$2.$ In the experiment of rolling a dice, the possible outcomes are $1, 2, 3, 4, 5$ and $6$.
Any one outcome like $4$ is called an elementary event.
Note that $H$ stands for getting a head and $T$ stands for getting a tail in the experiment of tossing a coin.
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
ABCD is a rectangle and P, Q, R and S are mid-points of the sides AB, BC, CD and DA respectively. Show that the quadrilateral PQRS is a rhombus.
In the given figure, $\triangle\text{PQR}$ is an isosceles triangle with $PQ = PR$ and $\text{m}\angle\text{PQR}=35^\circ.$ Find $\text{m}\angle\text{QSR}$ and $\text{m}\angle\text{QTR}.$ 
→A circular park of radius 40m is situated in a colony. Three boys Ankur, Amit and Anand are sitting at equal distance on its boundary each having a toy telephone in his hands to talk to each other. Find the length of the string of each phone.
In the given figure, if $\text{AB }||\text{ CD},\text{EF }||\text{ BC},\angle\text{BAC}=65^\circ$ and $\angle\text{DHF}=35^\circ,$ find $\angle\text{AGH}.$
→In Fig. $\text{BE}\bot\text{AC} AD$ is any line from $A$ to $BC$ intersecting $BE$ in $H. P, Q$ and $R$ are respectively the mid-points of $AH, AB$ and $BC$. prove that $\angle\text{PQR}=90^\circ.$
→Find the integral roots of the polynomial $f(x) = x^3+ 6x^2 + 11x + 6$
→In Fig. $OD$ is the bisector of $\angle\text{AOC}, OE$ is the bisector of $\angle\text{BOC}$ and $\text{OD}\perp\text{OE}.$ Show that the points $A, O$ and $B$ are collinear.
→A wooden toy is in the form of a cone surmounted on a hemisphere. The diameter of the base of the cone is $16\ cm$ and its height is $15\ cm$. Find the cost of painting the toy at $Rs.$ $7$ per $100cm^2$
→The curved surface area of a cylinder is $1210 cm^2$ and its diameter is $20\ cm$ . Find its height and volume.
→The barrel of a fountain pen, cylindrical in shape, is $7cm$ long and $5mm$ in diameter. A full barrel of ink in the pen will be used up on writing $330$ words on an average. How many words would use up a bottle of ink containing one fifth of a litre?
→