Question 430173
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Hi
 1-30
Mulitples of 3:  3,6,9,12,15,18,21,24,27,30   |10 of them
Mulitples of 11: 11,22   |two of them
P(multiple of 3 'or' a multiple of 11? 10/30 + 2/30 = 12/30 = 2/5

Frank has 4 orange paper clips, 6 blue paper clips, 3 red paper clips, 
and 5 green paper clips in a box. 
If Frank randomly selects 1 paper clip, 
what is the probability that he will select 1 red paper clip?

18 paper clips in all
P(1 red clip) = 3/18 = 1/6