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The theoretical probability of drawing a red hat is 11/20 and the bag contains 33 red hats. How many hats does the bag contain in total? Regarding the rules of probability, which of the following statements is correct? Solve the following equations: a) 6sinX - 3 = 1 - 2sinX b) 2sinXcosX = 0? Question on a reservation change? Scientists join cancer cells with antibody-producing white blood cells to produce -?