Tickets numbered 1 to 20 are mixed up and drawn at random. what is the probability that the ticket drawn has a number which is a multiple of three or five.

8/15

2/5

9/20

1/2

B. 2/5

Step-by-step explanation:

First we write down the numbers.

1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20.

Multiplies of three or five above are: 6,9,10,12,15,16,19,20   (there are 8)

So 8/20.

8/20 simplified is 2/5

So, it's B.

1) complementary angles

2) supplementary angles

Step-by-step explanation:

1)

25  + 65 = 90

therefore given angles are complementary angles

2) 120+60=180, supplementary angles

3)