Abowl contains 3 red, 8 blue, and 7 black beads. margaret randomly selects 3 beads one after the other without replacement. find the probability of getting a red, blue, and black bead, in that order.

This experiment consists in three phases: let's analyse each phase and the correspondent probability.

At the beginning, we have beads. 3 of them are red. So, we have a probability of of selecting a red bead.

Suppose we do select a red bead with the first pick. Let's analyse the new scenario. Now we're left with beads, and 8 of them are blue. So, we have a probability of of selecting a blue bead.

And if we do, we arrive to the last scenario: we have beads, and 7 of them are black. So, we have a probability of of selecting a black bead.

So, in order to getting a red, blue, and black bead, in that order, three events must happen one after the other, and we know their individual probability. The result is thus the product of these probabilities, namely

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step-by-step explanation:

start with a line segment pq that we will copy. mark a point r that will be one endpoint of the new line segment. set the compasses' point on the point p of the line segment to be copied. adjust the compasses' width to the point q. the compasses' width is now equal to the length of the line segment pq.

step-by-step explanation: