well, heres another set of math problems for you all to solve!
1) Find the sum of the coefficients in the expansion of (2a + b - c)^8.
2)Two urns contain 12 marbles: 6 black marbles and 6 white marbles are in the first urn, and 12 black marbles are in the second. A marble is chosen at random from the first urn and placed in the second urn. A marble is then chosen from the second urn. What is the probability that the marble chosen from the second urn is black?
1) Find the sum of the coefficients in the expansion of (2a + b - c)^8.
2)Two urns contain 12 marbles: 6 black marbles and 6 white marbles are in the first urn, and 12 black marbles are in the second. A marble is chosen at random from the first urn and placed in the second urn. A marble is then chosen from the second urn. What is the probability that the marble chosen from the second urn is black?
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