Each of 11 pieces of paper contains a different number from (4,6,7,9,10,11,12,13,15,17,19). The pieces of paper are folded and

Question

Each of 11 pieces of paper contains a different number from (4,6,7,9,10,11,12,13,15,17,19). The pieces of paper are folded and placed in a bag. In selecting a piece of paper without looking, find the probability of selecting an odd number or a number that is at least 12. 
1/8
9/11
7/11
8/11

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