[計量] 10/13~10/18 印度數學問題

看板GRE (GRE入學考試)作者calka (^^)時間15年前 (2010/10/23 07:26)推噓0(0推 0噓 0→)

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這些是我不會的數學，麻煩大家了，謝謝~~~ 10/13印度數學 http://www.drrajus.com/forum/viewtopic.php?t=7893 1. If a number is 20% more than x and is equal to the number which is 10% less than y, then what is the increase in y with x? 3. Col A: Mean of all the numbers from 1 to 31 inclusive Col B: some value (xxx) 這題我看大家求colA的答案就跟我不一樣...我算出16 5. Col A: The remainder of 10^22+1 when divided by 11 Col B: 2 這題我看很多回報的都說是2 我已經看到背起來答案了但是考試的時候這題真的要算的話，是要怎麼算...真的10的22次方去算嗎? 因為我只有背到10的10次方是1024... 9. Given two groups ‘G’ and ‘H’. If 30% of number of items in G and 20% of number of items in H are common, then Col A: Number of items in G Col B: Number of items in H 答案有寫B或是D，不曉得是哪個對...我是B的 10. Given two points on the circumference of the circle of centre ‘O’ as P(10, -2) and Q(22, -2). If the angle POQ is 120°, find the circumference of circle? 這題我算不出來 11.(有圖)Given a figure like above. If the side length of the square is 4, then find the area of the shaded region? 答案是8pi-1,不曉得怎麼算的.... 12. (有圖)Given a figure of two concentric circles like above and the radius of bigger circle is twice the radius of smaller circle. If a point ‘p’ lies in the circle, then Col A: The probability of the point being in the shaded region Col B: 3/4 也不知道怎麼算... 10/18 印度數學 http://www.drrajus.com/forum/viewtopic.php?t=7902 3. The term (36)^122 is not divisible by which of the following? A. 4 B. 6 C. 8 D. 10 答案是D.10 7. (有圖)Given a figure like above, a square ABCD with ‘E’ and ‘F’ as the midpoints of BC and CD, find the ratio of area of triangle FCE to the area of triangle AEF? 我是假設他AB的邊長是2下去算，我算出來是2/5根號2 8. Given two cylinders A and B of radius 1.5 and 3 respectively and the height of the cylinders A and B is 10ft. The water in the cylinder is filled up to 8ft and cylinder B is empty. If the water from cylinder A is poured into cylinder B, then what is the height of the liquid in cylinder B? 這題題目意思我不太懂... 9. Given a line equation 2x + y =6. Which of the following lines intersects the given line? A. 2x + y = 2 B. x – 2y = 4 C. x^2 = 4y + 1 & so on……… 答案是B 10. Given three types of frames with their respective costs. 10 frames -------- $10 each 5 frames --------- $15 each 7 frames --------- $12 each Find the average cost of the frame? 我算出11又17/22 11. Given an equation of a line ‘L’ as 3x + 4y = 6. If another line ‘M’ passes through these two points (-1, 5) and (0, 3), then Col A: Slope of line L Col B: Slope of line M col B我算-2 12. Given two persons X and Y. The person X moving in a straight line path takes 1 min to travel from A to B and person Y moving along the semicircular path takes 2mins to travel from A to B. Col A: Average Speed of person X Col B: Average Speed of person Y 這題請問是按照常識解嗎，直線速度快?所以是B? -- ※ 發信站: 批踢踢實業坊(ptt.cc) ◆ From: 122.18.136.117