Tickets Numbered 1 To 20 Are Mixed Up And Then A Ticket Is Drawn At R

1.	Tickets Numbered 1 To 20 Are Mixed Up And Then A Ticket Is Drawn At Random. What Is The Probability That The Ticket Drawn Has A Number Which Is A Multiple Of 3 Or 5?
Answer» Here, S = {1, 2, 3, 4, ...., 19, 20}. Let E = EVENT of GETTING a MULTIPLE of 3 or 5 = {3, 6 , 9, 12, 15, 18, 5, 10, 20}. P(E) = n(E)/ n(S)=9/20. Here, S = {1, 2, 3, 4, ...., 19, 20}. Let E = event of getting a multiple of 3 or 5 = {3, 6 , 9, 12, 15, 18, 5, 10, 20}. P(E) = n(E)/ n(S)=9/20.

Tickets Numbered 1 To 20 Are Mixed Up And Then A Ticket Is Drawn At Random. What Is The Probability That The Ticket Drawn Has A Number Which Is A Multiple Of 3 Or 5?

Answer»

Here, S = {1, 2, 3, 4, ...., 19, 20}.

Let E = EVENT of GETTING a MULTIPLE of 3 or 5 = {3, 6 , 9, 12, 15, 18, 5, 10, 20}.

P(E) = n(E)/ n(S)=9/20.

Here, S = {1, 2, 3, 4, ...., 19, 20}.

Let E = event of getting a multiple of 3 or 5 = {3, 6 , 9, 12, 15, 18, 5, 10, 20}.

P(E) = n(E)/ n(S)=9/20.