This is 1 - probability that NO ONE af the six cards is a spade. The probability that the 1-st card in not a spade is. The probability that the 2-nd card in not a spade is . The probability that the 3-rd card in not a spade is . The probability that the 4-th card in not a spade is . The probability that the 5-th card in not a spade is . The probability that the 6-th card in not a spade is . Therefore, the probability under the question is P = = 0.8397. ANSWER