Consider the circles shown to the  right, where the color of the number is in parentheses. Assume one circle is selected at random and each circle is equally likely to be selected. Determine the probability of selecting a black b l a c k number, given that the circle is orange o r a n g e .

The sequence of colors of 6 circles labeled 1 to 6 is as follows: yellow, green, orange, orange, orange, and yellow. The colors of the labels from 1 to 6 are as follows: black, black, red, red, black, and black. 123456yellowgreenorangeorangeorangeyellow(black)(black)(red)(red)(black)(black)