最新英語(yǔ)數(shù)學(xué)題

1、 精品文檔1、during a sale, the price of a book is reduced（減少）by 25%. the sale price is then further（進(jìn)一步地）reducedby 40%. the cost of the book as a percentag（e百分率） ofthe original（原來(lái)的）price is（ ）2、a/b is a fraction（分?jǐn)?shù)）. if 2 is added to the numerator（分子）, the value of the fraction is 1/2. if 3 is addedto th

2、e denominator（分母）, the fraction has a value of 1/3.the value of the sum a + b is ( )223、the floor of a fraction is defined（下定義）to be thelargest integer（整數(shù)）which is not greater than thatfraction. for example（例如）, floor(10/3) =3. evaluate（求的值） floor(floor(1000/7)/(floor(71/2).4、if i climb a staircase（

3、樓梯）2 steps at a time, one stepis left over. climbing 3 steps at a time gives 2 steps leftover, while climbing 4 at a time gives 3 left over. how manysteps are there if there are fewer（較少的）than 20?精品文檔 精品文檔5、how many animals do i have if all but（除以外）two aredogs, all but two are cats and all but two a

4、re hamsters（倉(cāng)鼠）?6、a box contains（容納 包含）24 identical（完全相同的）cubes. how many cubes can be placed in another box each ofwhose dimensions（規(guī)模 大?。﹊s double that of the original（原來(lái)的）box?7、a mouse takes 12 sec. to run once around a circular track（圍繞一個(gè)圓形跑道）, while another mouse takes 16 sec. thetwo mice leave

5、 the starting line at the same time and endtheir race 1 minute 40 seconds later. how many times afterthe start do the two mice find themselves simultaneously（同時(shí)）at the starting line?8、if n is an integer and 2n is a multiple（倍數(shù)）of 3, then5n must be a multiple of（）精品文檔 精品文檔9、claude has in his hand 15

6、coins (either pennies 一分幣, nickels五分幣 or dimes一角幣) worth（價(jià)值）79 centsin total. how many dimes does he have?10、what is the 100 term in the sequence（序列） 0, 2,th6, 12, 20, 30, 42, . ?11、on an exam with n questions,marie correctly（正確地）1answered 15 of the first 20 but just of the rest. if her3total score（

7、總分）was 50%, what was n?12、a set of 10 numbers has sum 100. each number of the setis increased（增加）by 20, then multiplied（乘）by 20 thendecreased by 20. what is the sum of the numbers in the newset?精品文檔 精品文檔13、suppose（假設(shè)）m is a two-digit number（兩位數(shù)）and thatn is obtained（得到）by reversing（顛倒）the digits of

8、m.if m + n = 132, how many different values can m have?14、of the integers 1 to 1000 inclusive（包含的）, how manyare multiples of 3 but not multiples of 5?15、find the value of this product of 98 numbers:精品文檔 精品文檔16、the digit in the ones place（個(gè)位）of a two-digit numberis two more than three times the digit in the tens place.if the digits are reversed（顛倒）, the new number is twoless than three times the original number. find theorig