4. An urn contains 10 balls: 4 red and 6 blue. A second urn contains 16 red balls and an unknown number of blue balls. A single ball is drawn from each urn. The probability that both balls are the same color is 0.44.
Calculate the number of blue balls in the second urn.
(A) 4
(B) 20
(C) 24
(D) 44
(E) 64
詳解 (共 1 筆)
未解鎖
1. 題目解析 題目中提到兩個 urn...