Question
You choose a marble at random from a bag containing 7 green marbles, 3 purple marbles and 2 red marbles. After you pick the marble, you don't replace it and choose again. Find the probability of P(purple then green)
143
likes713 views
Answer to a math question You choose a marble at random from a bag containing 7 green marbles, 3 purple marbles and 2 red marbles. After you pick the marble, you don't replace it and choose again. Find the probability of P(purple then green)
Hermann
4.6128 Answers
green marbles = 7
purple marbles = 3
red marbles = 2
total marbles = green + purple + red = 7 + 3 + 2 = 12
probability of purple = 3/12
probability of green 2nd pick (without replacement) = 7/11
probability of purple then green = \frac{3}{12}\cdot\frac{7}{11}=\frac{21}{132}=\frac{7}{44}
Frequently asked questions (FAQs)
Question: Simplify the expression 3x(4y - 2x)(5y + 3x) using factoring and the distributive property.
+
Math question: Solve for x: logβ
(x+1) + logβ
(x-1) = logβ
(xΒ² - 1)
+
What is the smallest natural number N for which there exist natural numbers A, B, and C satisfying the equation A^N + B^N = C^N?
+
New questions in Mathematics