Algebra Problems: probability?
A warehouse has 5,000 drums of liquid chemicals. The foreman knows that 50 of these drums contain off-quality chemicals. Assume that the drum is replaced each time before sampling. What is the probability that none of 3 drums he selects at random are off-quality?
a (1/100)³
b (50x49x48)/(5,000³)
c (99/100)³
Which of the following represents the number of subsets of five elements can be formed from a set of six elements?
a 5!
b C(6, 5)
c P(6, 5)
A jar contains 3 red, 4 blue, and 5 white marbles. The probability of drawing a red or a white marble is 2/3.
a True
b False
A train has 10 cars numbered 1 through 10. If the cars are coupled randomly, what is the probability that the first 3 cars are in car number order?
a 1/720
b 2/15
c 1/5,040
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A warehouse has 5,000 drums of liquid chemicals. The foreman knows that 50 of these drums contain off-quality chemicals. Assume that the drum is replaced each time before sampling. What is the probability that none of 3 drums he selects at random are off-quality?
B
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Which of the following represents the number of subsets of five elements can be formed from a set of six elements?
b C(6, 5)
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A jar contains 3 red, 4 blue, and 5 white marbles. The probability of drawing a red or a white marble is 2/3.
b: False
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A train has 10 cars numbered 1 through 10. If the cars are coupled randomly, what is the probability that the first 3 cars are in car number order?
1/10 * 1/9 * 1/8= 1/720
A:1/720
~David
attempt to jot down equations for what's given: permit r be the pink balls b be the blue balls n = r + b is the entire then r/n = a million/3 once you upload one pink one then: (r+a million)/(n+a million) = 3/8 it somewhat is 2 equations in 2 unknowns, which i'm particular which you would be able to sparkling up.