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Euglena is unique among protists as it exhibits features of both plants and animals. It possesses chloroplasts to perform photosynthesis (like plants) and is motile, using a flagellum (like animals).
In a box there are 12 orange, 5 white, and 7 blue balls. One ball is picked up randomly. What is the probability that it is neither white nor blue?
...Coupons numbered 1 to 10 are shuffled and one is drawn what is the probability that it bears an odd number which is also a multiple of 3?
What is the probability that the cards drawn contains exactly 2 purple card?