Questions

• More About Probability Recognize the notation of set language including union, intersection, and complement Understand the addition law of probability and concepts of mutually exclusive events and complementary events

  $P$ 袋內有 2 個紅球及 4 個綠球，而 $Q$ 袋內有 1 個紅球及 3 個綠球。若隨機選取一袋且隨後從該袋中隨機抽出一個球，求抽出綠球的概率。

  2015

• More About Probability Recognize the notation of set language including union, intersection, and complement Understand the addition law of probability and concepts of mutually exclusive events and complementary events

  㓗儀的口袋內有一個 $\$ 1$ 硬幣、一個 $\$2$ 硬幣、一個 $\$5$ 硬幣及一個 $\$ 10$ 硬幣。若絜儀從她的口袋中隨機取出三個硬幣, 求她取得至少 $\$ 13$ 的概率。

  2016

• More About Probability Recognize the concept and notation of conditional probability Understand the addition law of probability and concepts of mutually exclusive events and complementary events

  某袋中有1個紅球、3個黃球及6個白球。在一次幸運抽獎中，從該袋中隨機抽出一個球，並根據下表獲得一定數量的代幣： | 抽出的球的顏色 | 紅 | 黃 | 白 | | --- | --- | --- | --- | | 獲得的代幣數 | 90 | 20 | 10 | 求在此次幸運抽獎中獲得代幣數的期望值。

  2016

• More About Probability Recognize the notation of set language including union, intersection, and complement Understand the addition law of probability and concepts of mutually exclusive events and complementary events

  某箱子內有 9 罐咖啡及 3 罐紅茶。若從該箱子中隨機取出 4 罐, 求取出至少 2 罐紅茶的概率。

  2016

• Permutations and Combinations Understand the concept and notation of combination Solve problems on the combination of distinct objects without repetition

  某班有 20 名男生及 15 名女生。若從該班中選出 6 名學生組成一個至多有 2 名女生的委員會, 則可組成多少個不同的委員會?

  2016

• More About Probability Recognize the notation of set language including union, intersection, and complement Understand the addition law of probability and concepts of mutually exclusive events and complementary events

  下面的棒形圖顯示某群小童在一遊戲中所獲代幣的數目的分佈。若從該群中隨機選出一名小童, 求所選出的小童在該遊戲中獲得少於 5 個代幣的概率。 所獲代幣的數目

  

  2017

• Permutations and Combinations Understand the concept and notation of combination Solve problems on the combination of distinct objects without repetition

  某委員會有 13 名學生及 6 名教師。若從該委員會中選出 5 名學生及 4 名教師組成一隊，則可組成多少不同的隊？

  2017

• More About Probability Recognize the notation of set language including union, intersection, and complement Understand the addition law of probability and concepts of mutually exclusive events and complementary events

  當佩怡擲一飛鏢時，她擲中目標的概率為 0.7。若佩怡擲該飛鏢 4 次，求她擲中目標至多 3 次的概率。

  2017

• More About Probability Recognize the notation of set language including union, intersection, and complement Understand the addition law of probability and concepts of mutually exclusive events and complementary events

  從七張分別記有數字 $1 、 1 、 1 、 2 、 2 、 3$ 及 $4$ 的紙卡中, 隨機同時抽出兩個數字。求抽出數字之和為 $5$ 的概率。

  2018

• Permutations and Combinations Understand the concept and notation of combination Solve problems on the combination of distinct objects without repetition

  某班有 14 名男生及 15 名女生。若從該班中選出 3 名相同性別的學生組成一隊，則可組成多少不同的隊？

  2018