Practice finding probabilities of events, such as rolling dice, drawing marbles out of a bag, and spinning spinners.
You might need: Calculator


You draw a card at random from a deck that contains 3 black cards and 7 red cards.
What is P, left parenthesis, d, r, a, w, space, a, space, b, l, a, c, k, space, c, a, r, d, right parenthesis?
If necessary, round your answer to 2 decimal places.
  • Your answer should be
  • an integer, like 6
  • an exact decimal, like 0, point, 75
  • a proper fraction, like 1, slash, 2 or 6, slash, 10
  • an improper fraction, like 10, slash, 7 or 14, slash, 8
  • a mixed number, like 1, space, 3, slash, 4
  • a percent, like 12, point, 34, percent