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  • 英語翻譯

    英語翻譯
    1、Did you know?In the decimal number system (base 10) ten different digits,0 to 9,are used to write all the numbers.In the binary number system (base 2) two different digits are used,i.e.0 and 1.
    Which one of the following numbers is not a valid number in the
    octal number system (base 8)?
    A) 128 B) 127 C) 126 D) 125 E) 124
    3、The number of diagonals that can be drawn in a regular polygon with
    twenty sides (icosagon) is_____.
    4、If a and b are integers,10Ä3=1,152Ä7=3,and then 379Ä6 is equal to_____.
    5、Two numbers are in the ratio 2 :3.When 4 is added to each number the ratio changes to 5 :7.
    The sum of the two original numbers is____.
    6、The greatest number of Mondays which can occur in 45 consecutive
    days is____
    7、Saul plays a video game in which he scores 4 for a hit and lost 6 for a miss.After 20 rounds his score is 30.The number of times he has missed is____.
    8、Three girls A,B and C run in a 100 m race.When A finishes,B is 10 m
    behind A and when B finishes C is 20 m behind B.How far in metres was
    C from A when A finished?
    (Let’s assume all the athletes run at a constant speed)
    9、The areas of the faces of a rectangulabox are 84 cm2 ,70 cm2and 30 cm2.The volume of the box in cm3 is____.
    10、 You have 3 weights:1 kg,3 kg and 9 kg as well as an equal arm balance,as shown.How many different weight objects can you weigh with these three?
    [Remember the weights may be placed on either side]
    英語人氣:208 ℃時間:2020-02-02 09:18:19
    優(yōu)質(zhì)解答
    1,十進制用0~9表示所有數(shù),二進制只用0和1表示下面哪個數(shù)在八進制下是非法的?A)128(八進制用0~7)3,一個二十邊形內(nèi)可畫出多少條對角線?170條(20選2,減去20條邊)4,如果a和b都是整數(shù),10Ä3=1,152Ä7=3,那...
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