An urn contains 10 black and 5 white balls. Two balls are drawn from the urn one after one another without replacemet. What is the probability that both drawn balls are black?

An urn contains 10 black and 5 white balls. Two balls are drawn from the urn one after one another without replacemet. What is the probability that both drawn balls are black?

Matching exercise

Match the items on the right to the items on the left.

Step 1

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Step 4

Step 5

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