Question

in a lottery there are 200 tickets . out of these 50 have prizes and rest are blank . a ticket is drawn at random . what is probability of getting a blank ticket​

Answer 1

Step-by-step explanation:

the total no. of outcomes =200 tickets

let e1 be the tickets from which we can get prizes and e2 be the tickets which are blank

so the favourable no. of outcomes which are blank =150 tickets

hence,

P(E1/E2)= 150/200

= 3/4.

Answer 2

Answer:-

The probability of getting a blank ticket is $\bf\dfrac{3}{4}.$

Explanation:-

Given:-

• Total Number Of Tickets = 200.

• Number of tickets have prizes = 50.

• Number of blank tickets $\tt = 200 - 50 = 150.$

To Find:-

• The probability of getting a blank ticket.

Solution:-

Probability of getting a blank ticket,

$\\ \rm = \dfrac{Number\ Of\ blank\ Tickets}{Total\ Number\ Of\ Tickets}.$

$\\ \tt = \dfrac{15\cancel{0}}{20\cancel{0}}.$

$\\ \tt = \cancel{\dfrac{15}{20}}.$

$\\ \boxed{\bf = \dfrac{3}{4}.}$