Suppose that you have 10 cards. 3 are blue and 7 are orange. The 3 blue cards are numbered 1,2, and 3. The 7 orange cards are numbered 1, 2, 3, 4, 5, 6, and 7. The cards are well shuffled. You randomly draw one card.
• O = card drawn is odd-numbered
How many elements are there in the sample space? [ Select ] ["7", "10", "2", "3"]
P(B) = [ Select ] ["0.7", "0.2", "0.5", "0.3"](Give your answer in decimal form.
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