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Bookmark or Share- probability - Drawing marbles from a bag without replacement ...Suppose there is a box with 42 marbles. 20 white, 10 black, 6 red, 6 green. You choose 4 marbles at random without replacement. What is the chance you picked 2 white and 2 black?
- linear algebra - How to prove that eigenvectors from different ...Suppose v 1, v 2, w are eigenvectors of M with different eigenvalue. and. w = ⍺ 1 v 1 + ɑ 2 v 2. w as composition of v1 and v2. Think of M as a transformation, for w to come out in the same direction, each of its components needs to be scaled proportionally (by the same amount).
- linear algebra - Find det A if A is 3 × 3 and det (2A) = 6 ...Stack Exchange Network. Stack Exchange network consists of 183 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.
- What is the probability of drawing 2 same colored marbles?Suppose there are 3 colored marbles (Red, Blue, Green). There are 10 red, 20 blue, 30 green marbles. You select 2 marbles without replacement. What is the probability that they are the same colors? My solution: $10 \choose 2$ ways to choose 2 red $20 \choose 2$ ways to choose 2 blue
- Suppose $f(x)$ is a polynomial of degree 5, and with leading ...Stack Exchange Network. Stack Exchange network consists of 183 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.
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