tdyson3p6xvtu
tdyson3p6xvtu
20.04.2021 • 
Mathematics

In a bag of marbles there are 6 blue marbles and 10 red marbles. You pick one marble out of the bag and​ then, without replacing the first​ marble, you pick another marble out of the bag. How many ways can you pick two red ​marbles?

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