Suppose that a fair nine sided die is rolled repeatedly until the first time that you a roll a number that you have seen before. (a) Find the distribution of the number of rolls. (b) What is the minimum number of times that must you roll in order to have at least a 50% chance of seeing a number previous rolled.

Answer asap ill give ! ’ a sample of radioactive material decays over time. the number of grams, y , of the material remaining x days after the sample is discovered is given by the equation y = 10(0.5)^x. what does the number 10 represents in the equation? a. the half-life of the radioactive material, in days b. the amount of the sample, in grams, that decays each day c. the time, in days, it will take for the samples to decay completely d. the size of the sample, in grams, at the time the material was discovered