Thank you for using the timer!
We noticed you are actually not timing your practice. Click the START button first next time you use the timer.
There are many benefits to timing your practice, including:
One box has 9 bolts, 3 white and 6 red; and another box has [#permalink]
29 Jan 2004, 12:33
One box has 9 bolts, 3 white and 6 red; and another box has 12 nuts, 5 white and 7 read. If I pick one bolt and a net from the respective boxes,
what is the probability of picking the same color bolt and nut?