Question

20 tickets on which numbers 1 to 20 are written , are mixed throroughly and then a ticket is drawn at a random out of them. Find the probability that the number on the drawn ticket is a multiple of 3 or 7

Answer 1

Answer:

2/5

Step-by-step explanation:

a multiple of 3 or 7                

 multiple of 3 or 7 are - 3,6,9,12,16,18

                                           7,14

now, total=8, no. of tickets =20

    P(E multiple of 3 or 7) = 8/20

                                         = 2/5