Question

1. Tickets numbered from 1 to 20 are mixed up. If a ticket is drawn at random, then the probability
that the ticket drawn has a number which is a multiple of 4
​

Answer 1

Given :

• Total Number of Cards = 20

To Find :

• Probability of getting a ticket that is a multiple of 4 .

Solution :

$\longmapsto\tt{Total\:Outcomes=20}$

$\longmapsto\tt{Favourable\:Outcomes=5\:(4,8,12,16,20)}$

$\longmapsto\tt{Probability=\frac{No.\:of\:Fav.\:Outcomes}{Total\:No.\:of\:Outcomes}}$

$\longmapsto\tt{\cancel\dfrac{5}{20}}$

$\longmapsto\tt\bf{\dfrac{1}{4}}$

So , Probability of getting a ticket that is a multiple of 4 is 1/4 ..

_______________________

Probability :

It is defined as chances of occuring or happening of an event.

• Probability of an event can never be negative.
• Probability of an event always lies between 0 and 1.

_______________________

Answer 2

Answer:

$\huge \bold \red {Question}$

Tickets numbered from 1 to 20 are mixed up. If a ticket is drawn at random, then the probability

that the ticket drawn has a number which is a multiple of 4

$\huge \bold \blue {To find}$

$\small \bf \: probability \: of \: multiple \: of \: 4$

$\huge \bold \green {AnSwEr}$

Multiple of 4 under 20 = 4,8,12,16,20

Multiple of 4 under 20 = 4,8,12,16,20 There are 5 multiple of 4 under 20

Total number = 20

$probability \: = \frac{</strong><strong>multi</strong><strong>ple</strong><strong> </strong><strong>\</strong><strong>:</strong><strong>of</strong><strong> </strong><strong>\</strong><strong>:</strong><strong> </strong><strong>4</strong><strong> </strong><strong>}</strong><strong>{</strong><strong>total</strong><strong> </strong><strong>\</strong><strong>:</strong><strong> </strong><strong>no</strong><strong> \: of \: </strong><strong>tickets</strong><strong>}$

$= \frac{20}{5}$

$= \frac{1}{4}$