Random samples a sample of 4 balls is to be selected at


Question: RANDOM SAMPLES A sample of 4 balls is to be selected at random from an urn containing 15 balls numbered 1 to 15. If 6 balls are green, 5 are white, and 4 are black

a. How many different samples can be selected?

b. How many samples can be selected that contain at least 1 white ball?

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