A

Admin • 828.70K Points
Coach

Q. 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?

  • (A) 1/2
  • (B) 3/5
  • (C) 9/20
  • (D) 8/15
  • Correct Answer - Option(C)
  • Views: 7
  • Filed under category Math
  • Hashtags:
Explanation by: Admin
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.

You must be Logged in to update hint/solution

Discusssion

Login to discuss.

Be the first to start discuss.