2019 袋鼠数学 E-Junior 真题 答案 详解
2019-04-02 mathkangaroo mathkangaroo E-Junior
| 序号 | 文件列表 | 说明 | ||
|---|---|---|---|---|
| 1 | 2019-E-Junior-paper-eng.pdf | 7 页 | 503.49KB | 英文真题 |
| 2 | 2019-E-Junior-paper-eng-zh.pdf | 7 页 | 4.14MB | 中英双语真题 |
| 3 | 2019-E-Junior-key.pdf | 1 页 | 276.96KB | 真题答案 |
英文真题
KSF 2019 - Problems Junior (Class 9 & 10)
Time Allowed: 150 minutes
SECTION ONE - (3 point problems)
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The mean of two numbers is 2019. One of the numbers is 2021. What is the other number? (A) 2017 (B) 2018 (C) 2020 (D) 2022 (E) 2023
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Which of the following has the largest value? (A) ( \frac{2^3}{3^2} ) (B) ( \frac{3^2}{2^3} ) (C) ( 3^2 - 2^3 ) (D) ( 2^3 - 3^2 ) (E) ( (3-2)(2-3) )
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A barber wants to write the word SHAVE on a board in such a way that a client looking in to the mirror reads the word correctly. How should the barber write it on the board? (A) SHAVE (B) SHAVE (C) ƎVAHS (D) EVAHƎ (E) ƎVAHƎ
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How many different sums of dots can you get by rolling three standard dice simultaneously? (A) 14 (B) 15 (C) 16 (D) 17 (E) 18
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Five identical glasses are filled with water. Four of them contain the same amount of water. Which one contains a different amount?
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A park has five gates. Monica wants to enter through one gate and to exit through a different one. In how many ways can she enter and exit the park? (A) 25 (B) 20 (C) 16 (D) 15 (E) 10
中英双语真题
Junior 2019 Hong Kong Mathematics Kangaroo Contest Grade 9 & 10 Part 1: 10 problems, 3 points each | 第一部分：10道题目，每题3分 1. $20 \times 19 + 20 + 19 = $ (A) 389 (B) 399 (C) 409 (D) 419 (E) 429 2. A model train takes exactly 1 minute and 11 seconds for each round on a course. How long does it take for six rounds? 火车模型在一条轨道上转一圈需要1分11秒。那麼轉六圈需要多少時間？ (A) 6 minutes 56 seconds 6分56秒 (B) 7 minutes 6 seconds 7分6秒 (C) 7 minutes 16 seconds 7分16秒 (D) 7 minutes 26 seconds 7分26秒 (E) 7 minutes 36 seconds 7分36秒 3. A barber wants to write the word SHAVE on a board in such a way that a client looking into the mirror reads the word correctly. How should the barber write it on the board? 理髮師想要在板上寫一個單詞SHAVE，使得客人從鏡子裏看就能正確的讀出這個單詞。問理髮師應該如何寫？ (A) SHAVE (B) SHAVE (C) ƎVAHS (D) EVAHƎ (E) ƎVAHƎ 4. How many different sums of dots can you get by rolling three standard dice simultaneously? 同時拋擲三個標準骰子所得到的點數之和有多少種不同的可能？ (A) 14 (B) 15 (C) 16 (D) 17 (E) 18 5. Five identical glasses are filled with water. Four of them contain the same amount of water. Which one contains a different amount? 五個相同的玻璃杯裡都裝著水。其中四個杯子裡的水一樣多。問哪個杯子中的水與其他杯子裡的水不一樣？ (A) (B) (C) (D) (E) 6. A park has five gates. Monica wants to enter through one gate and to exit through a different one. In how many ways can she enter and exit the park? 一個公園有五個門。Monica想通過一個門進入並通過另一個門離開。問她有多少種方式進出公園？ (A) 25 (B) 20 (C) 16 (D) 15 (E) 10
