Question

Tickets numbered 1 to 20 are mixed up and then a ticket is drawn at random. What is the probability that the ticket drawn at random, has a multiple of 4 ?

1/2
1/5
1/4
2/5​

Answer 1

Probability [Ticket drawn at random, has a multiple of 4] = 1/4

Explanation:

Given:

Total number of tickets = 20

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

Total number of Multiple of 4 = 5

Find:

Probability [Ticket drawn at random, has a multiple of 4]

Computation:

Probability of en event = Number of favourable outcome / Total number of outcomes

Probability [Ticket drawn at random, has a multiple of 4] = Total number of Multiple of 4 / Total number of tickets

Probability [Ticket drawn at random, has a multiple of 4] = 5 / 20

Probability [Ticket drawn at random, has a multiple of 4] = 1/4