---

All right, I had just over 2 weeks to study for a last-minute stab at the GMAT, as the school I was going to attend decided to wait to start the next cohort until Spring. So I madly put together 3 more applications and am sitting for the GMAT TOMORROW after just a couple weeks of studying. Last wee...

---

A jar contains 8 red marbles and y white marbles. If Joan takes 2 random marbles from the jar, is it more likely that she will have 2 red marbles than that she will have one marble of each color? (1) y ≤ 8 (2) y ≥ 4 We need to find if the probability of 2 reds is greater than one red, one white...

---

any way to solve this problems using place value of numbers (100A + 10B + C = ABC)? im using that framework for this kind of problems. it usually works but for some reason cant figure it out for this one.. If A , B , and C are digits and AB does not = 0, what is the value of B? (1) AB + BA = AAC (2...

---

The total cost of producing item X is equal to the sum of item X's overhead cost and production cost. If the production cost of producing X decreased by 5% in January, by what percent did the total cost of producing item X change in that same month? (1) The overhead cost of producing item X increas...

---

If x≠0, what is the value of (x^p/x^q)^4 (1) p = q (2) x = 3 Thanks in advance We need to find x^p/x^q)^4 = (x^(p-q))^4= x^(4(p-q)) Lets check: (1) p = q p=q => p-q=0. Then x^(4(p-q)) = x^0 = 1. Sufficient. (2) x = 3 x^(4(p-q)) = 3^(4(p-q)). Value of x depends on p-q value. Insufficient. Hence A ...

---

grandh01 wrote:If x ≠ 1, is y equal to x + 1?
(1) y-2/x-1=1
(2) y^2 = (x + 1)^2

Statement 1:
(y-2)/(x-1) = 1
=> y-2 = x-1
=> y = x+1
Sufficient.

Statement 2:
y^2 = (x+1)^2
=> y = either (x+1) or -(x+1).
We get two values for y. Insufficient.

A is correct.

---

P , Q , R , S and T are five points such that R is somewhere between point P and Q on a straight line. The distance between P and Q is 8 units. The point S is 6 units to the north of R and point T is 6 units to the east of S and north of point Q. Calculate the shortest distance between point P and ...

---

How do we do this one efficiently? Would graphical representation work in 2 mins? Testing numbers just takes way too long.... If x and y are negative numbers, is x<y? (1) 3x+4<2y+3 (2) 2x−3<3y−4 This is how I did it: We are told that both x and y are negative numbers. We need to find if x<y => ...