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chix475ntu

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Everything posted by chix475ntu

  1. definetely competitive score and also non-IT would help your case as well.
  2. LOR should be in sync with your overall application. ex: if you talk a lot about leadership in essays and the recommendation doesnt even mention any parts of leadership then its not good. To say the least, leadership and teamwork should be highlighted in the LOR coupled with some achievements. Excellence is not something that could be elaborated in LOR unless related to some innovative ways you did something etc but it depends on the job you are doing.
  3. You are assuming that y is an interger - but this is not given -- y could be 0.1 and 2y-1 = -0.8
  4. st 1) dont know about x .. insuffient st 2) x = 1-y if y if y>=1 then no insufficient combining we know that y>0 but we dont know if y=1 E
  5. z² - 4z > 5 z² - 4z -5 > 0 (z-5) * (z+1) > 0 .. either both expressions are greater than 0 or both expressions are less than 0 so z-5 > 0 & z+1 > 0 OR z-5 z>5 & z>-1 OR z z> 5 OR z E fits the criteria
  6. answers are given as boxed numbers, so you need to apply the rules given in the equation for the answers as well.
  7. If I understand the question correctly, you need to take the maximum scores for individual persons to get teh difference of maximum scores. Let P3 have max score: 630 - 750 Let P1 have min score: 500 - 550 R = 750 - 500 = 250 in the above example, R = 750-550 = 200 here 500 is the minimum score .. we are not asked about the ACTUAL range but just he difference between range of maxmum scores and minimum scores
  8. m>0, n>0 is (m+x)/(n+x) > m/n st 1) m m/n is always positive and but x could be positve or negative and if x is negative, then i can get different numbers such that one of m+x is negative and n+x is positve nad the expression of LHS is negative which canot be greater than RHS. not sufficient st 2) x>0 .. as all expression are positive, we can multiple and reduce the equation to x *(n-m) > 0 x> 0 but we dont know if n-m > 0 not sufficent combing x>0, n-m > 0 .. sufficient C
  9. x > 0 , is x>3?? st 1) (x-1)^2 > 4 x-1 > 2(for other expression x will come as negative x > 3 sufficient st 2) (x-2)^2 > 9 x-2 > 3(for other expression x will come as negative x > 5 sufficient D
  10. st 1) either one of the expression can be zero st 2) either one of the expression can be zero combining we can find out that 3r+2-s = 0 Ex: (x-1) * ( x-2) = 0 here for x=1 and x=2 the expression is 0. so to find out only one value of x, we need to get a second equation to find out.
  11. from the figure we need to find out angle PRS - angle PQR in traingle PQR, angle PQR + angle PRQ + angle QPR = 180 also angle PRS + angle PRQ = 180 so angle PQR + angle QPR = angle PRS (ouside angle is same as sum of other inside angles) angle PRS - angle PQR = angle QPR -- I (need to find angle QPR) st 1) angle QPR is given. Sufficient st 2) angle QPR can be calculated using the other 2 angles in the traingle. Sufficient D
  12. min score is 500 and max is 750 Person 1, range is 50, minimum score can be 500 to 700 and max score can be 550 to 750 Person 2, range is 80, minimum score can be 500 to 670 and max score can be 580 to 750 Person 3, range is 120, minimum score can be 500 to 630 and max score can be 620 to 750 possible maximum range of scores could be when person 3 has max score of 750 and person 1 max score is 550 = 200 possible minimum in the above case is 630-500=130 difference = 70 B
  13. Mean = 21 , SD = 6 1 SD below mean = 15 2 SD below mean = 9 number of hours of Pat watching telivision is between 9 and 15 D
  14. 9 * 6 (with given parametes = 3 * 9 * 3 = 81 as answers are given in box, we need to find out which values its is .. box 27 = 27 * 3 = 81 D
  15. for venn diagrams, i draw up circles and fill up the numbers that are given in the question. i usually assign only golf = a, all 3 = b, golf+soocer+not tennis = c etc ... and we know some of the values or a combination of values from the given expression .. so using that i got this equation. HTH
  16. lX-Yl = lXl-lYl lX-Yl is always positive ... lXl-lYl will be positive is absolute value of X is greater than absolute value of Y--- means Y is closer to 0 than X st 1) X+Y > 0 .. doesnt tell anything about X and Y ... could be anything . not sufficient st 2) X - Y > 0 .. we know x is greater than Y .. but we dont know if X is closer to 0 then Y or other way around .. not sufficient combining also we cannot say if Y is closer to 0 than X E
  17. another way ... 70 = 2 * 5 * 7 so the number of rows/columns can be 35/2 , this cannot be possible as we are removing 2 spaces and there wont be anything left 14/5 , remove 2 per row will be 28 cars removed, remaining will be 3 per row and 3*4 = 12 .. so not this option 10/7 .. remove 2 per row and will be 20 cars removed, remaining will be 5 per row, and 5*4 = 20 .. yes so r = 10 D
  18. for traingle OPQ, angle OPQ + angle POQ + angle PQO = 180 angle OPQ + angle POQ = 180 - 70 = 130 ------------- I OQR and ORS are isoseles traingles x + x + angle QOR = 180 angle QOR = 180 - 2x angle ROS = 180 - 2(x+1) = 178 - 2x PQ is parallel to OS .. so angle QOR + angle ROS = 70 180 - 2x + 178 - 2x = 70 4x = 180 + 108 = 288 x = 72 angle ROS = 178 - 2x = 178 - 144 = 34 A angle POQ + angle QOR + angle ROS + angle SOX = 180
  19. + = 20 * 18 * ... * 2 + 22 * 20 * .... * 2 = 20 * .... * 2 * (1 + 22) = 20 * 18 * .... * 2 * 23 greatest prime factor is 23 E
  20. for all the options you get from st 1 and then you take the common options from the question stem ... if all hte common options has A as even, then you know for sure that A is even but if one option has A even and other option has A odd, then you cannot say that A is even for sure(case for st 2)... HTH
  21. 1 p = 1/x q = y r = 1/z as x>1, 1/x 11/z, means p>r sp r E
  22. 10x/(x+y) + 20y/(x+y) = k and x 10(x+y)/(x+y) + 10y/(x+y) = k 10 + 10y/(x+y) = k ... means k > 10 20(x+y)/(x+y) - 10x/(x+y) = k ( add/substract 10x/(x+y) from the first equation 20 - 10x/(x+y) = k -- means k as x 0.5 so 10y/x+y > 5 only option is 18 D
  23. take the LCM of the numbers and that would be the smallest multiple of both 28 and 16 = 112 ... so total numbers less than 300 are 112, 224 A
  24. with the given information ab+c is odd so options a -> O, b -> E, c->O a -> O, b -> O, c->E a -> E, b -> E, c->O a -> E, b -> O, c->O st 1) generated similar expressions as above and the only one that matches is a -> E, b -> E, c->O. Sufficent st 2) generated similar expressions as above and the the options remaining are a -> E, b -> O, c->O. a -> O, b -> O, c->E. Not sufficient as a could be even/odd A
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