Mathematics: Abag contains 4 blue, 4 red, and 4 green marbles. four marbles are drawn at random from the bag. how many different samples are possible which include exactly two red marbles?

Abag contains 4 blue, 4 red, and 4 green marbles.

Ответ:

melikefood01

30.12.2021

You make a tree diagram to find the possible outcomes, which there are 81 possible outcomes, 24 of which have exactly 2 red in them.

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Ответ:

Masonb1849

26.07.2020

Mathematics

✅

Step-by-step explanation:

$\frac{ {x}^{a + b} \times {x}^{b + c} \times {x}^{c + a} }{ {x}^{2a} \times {x}^{2b} \times {x}^{2c} } \\ \\ = \frac{ {x}^{a + b + b + c + c + a} }{ {x}^{2a + 2b + 2c} } \\ \\ (∵ {x}^{m} \times {x}^{n} = {x}^{m + n} ) \\ \\ = \frac{ {x}^{2a + 2b + 2c} }{ {x}^{2a + 2 b+ 2c} } \\ \\ = 1$

$\large\mathfrak{{\pmb{\underline{\orange{Happy\:learning }}{\orange{.}}}}}$

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Abag contains 4 blue, 4 red, and 4 green marbles. four marbles are drawn at random from the bag. how many different samples are possible which include exactly two red marbles?

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