SOLUTION: Ryan has the numbers 1–30 listed on individual index cards. If Ryan randomly selects 1 card, what is the probability that it will be a multiple of 3 or a multiple of 11?

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Question 451653: Ryan has the numbers 1–30 listed on individual index cards. If Ryan randomly selects 1 card, what is the probability that it will be a multiple of 3 or a multiple of 11?
Answer by ewatrrr(10682) About Me  (Show Source):
You can put this solution on YOUR website!
 

Hi,

numbers 1–30 listed on individual index cards

Includes 10 Multiples of 3: 3,6,9,12,15,18,21,24,27,30 

Includes 2 Mulitples of 11: 11,22

1 card selected

P(multiple of 3 or a multiple of 11) = 10/30 + 2/30 = 12/30 = 2/5