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OG18-数学分册
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If p and q are positive, is $$\frac{q}{p}$$less than 1?(1) p is less than 4.(2) q is less than 4.
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190310
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p,s,t are prime numbers. $$p^3s^3t^3$$=？
1：$$p^4st=1456$$
2：t=13
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Ready4
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Today, Anne is three times as old as Bobbi and Bobbi is 4 years younger than Charles. If Anne, Bobbi and Charles are all alive 3 years from today, which of the following must be true on that day?
<p class="ng-scope">I. Charles is 4 years older than Bobbi.p>
<p class="ng-scope">II. Anne is three times as old as Bobbi.p>
<p class="ng-scope">III. Charles is younger than Anne.p>
<p class="ng-scope"> p>
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Ready4
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<p>One month ago, Emily had twice as much money in her bank account than Mike and Mike had $200 more than Kelly. If Emily and Mike each deposited $200 in the past month and Kelly deposited $300 in the past month, which of the following must be true today?p>
<p> I. Mike has more money in his account than Kelly has.p>
<p> II. Mike's account balance today is half of Emily's account balance today.p>
<p>III. Emily has more money in her account than Kelly has.p>
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Ready4
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<p>A square table has a square glass inlay in the center, and a wooden strip of uniform width surrounding the glass. If the ratio of the glass inlay to the wooden strip is 4 to 5, which of the following could be the width, in feet, of the wooden strip?p>
<p>I.  p>
<p>II.  p>
<p>III. 1p>
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Ready4
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<p>If  and  are positive integers, what is the remainder when  is divided by  ?p>
<p>p>
<p>(1)  p>
<p>(2)  p>
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Ready4
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<p>If  , which of the following must be true?p>
<p> I.  p>
<p> II.  p>
<p>III.  "-(x+7)") is positive.p>
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Ready4
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<p>If  , does  ?p>
<p>(1)  p>
<p>(2) and  are both positivep>
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Ready4
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<p>Is  ?p>
<p>(1) (m-5)&space;>&space;0 "(m-10)(m-5) > 0") p>
<p>(2)  p>
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Ready4
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<p>If x and y are positive integers, is  divisible by 25?p>
<p>(1) x is a multiple of 30 and y is a multiple of 15p>
<p>(2) x = yp>
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Ready4
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<p>If  , where  is a prime number greater than  , how many different positive odd divisors does  have, including ?p>
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数论
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If k, m, and p are integers, is k - m - p odd?(1)k and m are even and p is odd.(2)k, m, and p are consecutive integers.
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Ready4
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<p>If  , which of the following must be true?p>
<p> I.  p>
<p> II.  "-(x+17)") is negative.p>
<p>III.  p>
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Ready4
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<p>If Chris saved $400 of his earnings last month, how much did Chris earn last month?p>
<p>p>
<p>(1) Chris spent  of his earnings last month on rent and saved  of the remainder.p>
<p>(2) Last month, Chris paid three times as much in loan payments as he saved. p>
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Ready4
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<p class="ng-scope">What is the value of  ?p>
<p class="ng-scope">(1)  p>
<p class="ng-scope">(2)  p>
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Ready4
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<p>In  , what is the length of  ?p>
<p>(1) The length of  is  .p>
<p>(2) The length of  is  .p>
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Ready4
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<p>What is the number of  degree rotations that a bicycle wheel made while rolling  meters in a straight line without slipping?p>
<p>(1) The diameter of the bicycle wheel, including the tire, is  meters.p>
<p>(2) The wheel made twenty degree rotations per minute.p>
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Ready4
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<p>In a certain field, solar panels are in rows. Each row has the same number of solar panels, and the number of rows is 5 less than the number of solar panels in a row. How many solar panels are in a row?p>
<p>(1) If one more solar panel is added to each row, 6 more solar panels will be added.p>
<p>(2) The field can fit no more than 9 rows of solar panels.p>
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Ready4
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<p zoompage-fontsize="16">Although coin clipping, a practice in which small amounts of silver or gold would be chipped from a coin to be sold as bullion, was made more difficult in England by the introduction of coin milling machines in 1662, it remained common until the end of the century before all the old unmilled coins were removed from circulation.p>
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Ready4
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<p>If a three-digit positive integer has its digits reversed, the sum of the resulting integer and the original is 706. If the middle digit is 5, what is the sum of the first and third digits in the original integer?p>
<p> p>
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