You can take 108 photos with 9 rolls of film. how many rolls of the same film will you need to take 84 photos? tell how you found your answer.

An assembly consists of two mechanical components. suppose that the probabilities that the first and second components meet specifications are 0.87 and 0.84. assume that the components are independent. determine the probability mass function of the number of components in the assembly that meet specifications. x

Can someone me out here and the tell me the greatest common factor

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