## Search found 29 matches

- by Tagne

Sun Mar 20, 2011 11:50 am- Forum: Problem Solving
- Topic: data Sufficiency
- Replies:
**7** - Views:
**1083**

- by Tagne

Sun Mar 20, 2011 10:16 am- Forum: Problem Solving
- Topic: data Sufficiency
- Replies:
**7** - Views:
**1083**

##### Combinatorics and Algebra

1. From a group of 21 astronaut that includes 12 people with previous experience in space flight, a 3 person crew is to be selected so that exactly 1 person in the crew has previous experience in space flight. How many different crew of this type is possible? a. 432 b. 594 c. 864 d. 1330 e. 7980 2 M...

- by Tagne

Sun Mar 20, 2011 12:29 am- Forum: Problem Solving
- Topic: Combinatorics and Algebra
- Replies:
**3** - Views:
**723**

##### data Sufficiency

1. Is x + y < 1 a. X < 8/9 b. Y < 1/8 2. Is x + y < 1 a. X < 8/9 b. Y < 1/8 3. If m and n are integers, is m odd? a. n + m is odd b. n + m = n^2 + 5 4. if -2x > 3y, is x negative? a. Y > 0 b. 2x + 5y -20 = 0 5. A manufacturer produced x percent more video cameras in 1994 than in 1993 and y percent m...

- by Tagne

Sun Mar 20, 2011 12:27 am- Forum: Problem Solving
- Topic: data Sufficiency
- Replies:
**7** - Views:
**1083**

##### Algebra probability and Geometry

1. The area of triangle â€œaâ€� is twice the area of triangle â€œbâ€�. let s be one side of b and S be the corresponding side in triangle â€œaâ€�; in terms of s, S =? The angles of the triangles are the same x,y &z. a. (Sqrt2/2)s b. (Sqrt3/2)s c. (Sqrt2)s d. (SQRT3)s e. 2s. 2. If x and y are positiv...

- by Tagne

Fri Mar 18, 2011 11:48 pm- Forum: Problem Solving
- Topic: Algebra probability and Geometry
- Replies:
**3** - Views:
**943**

##### Data Sufficiency

1. Is the average (arithmetic mean) of 5 different positive integers atleast 30? a. Each of the integer is a multiple of 10 b. The sum of the integer is 160 2. IxI = Y â€“ Z ? a. X + Y = Z b. X < 0 3. Warehouse Qâ€™s revenue from the sale of sofas was what percent greater this year than it was last ...

- by Tagne

Fri Mar 18, 2011 11:47 pm- Forum: Problem Solving
- Topic: Data Sufficiency
- Replies:
**13** - Views:
**2122**

- by Tagne

Fri Mar 18, 2011 5:04 pm- Forum: Problem Solving
- Topic: Data Sufficiency
- Replies:
**7** - Views:
**1998**

The answer to question 2 is "D" not "A". Each statement is sufficient. Can any please explain how this is possible?

- by Tagne

Fri Mar 18, 2011 4:34 pm- Forum: Problem Solving
- Topic: Data Sufficiency
- Replies:
**7** - Views:
**1998**

##### Algebra and probability

1. If x is a negative integer, which of the following expression has the least value? a. X^2 â€“ 0.5 b. X^2 â€“ 0.51 c. X^3 â€“ 0.502 d. X^3 â€“ 0.511 e. X^4 â€“ 0.512 2. If n is a multiple of 5 and n = p^2q, where p and q are prime numbers, which of the following will be a multiple of 25? a. P^2 b....

- by Tagne

Fri Mar 18, 2011 1:40 pm- Forum: Problem Solving
- Topic: Algebra and probability
- Replies:
**7** - Views:
**2128**

##### Data Sufficiency

1. The sum of positive integers x and y is 77. What is the value of xy?

a. X = y+1

b. X and y have the same tens digit

2. In the xy-plane what is the y intercept of line l?

a. The slope of line L is 3 times the y intercept

b. The x intercept of line L is -1/3

3. If zt < -3, is Z<4?

a. Z<9

b. T<-4

- by Tagne

Fri Mar 18, 2011 1:39 pm- Forum: Problem Solving
- Topic: Data Sufficiency
- Replies:
**7** - Views:
**1998**

##### Algebra

1. The y-intercept of a line L is 4. If the slope of L is negative, which of the following could be the x intercept of L? a. -1 b. 0 c. 6 2. On the number line the segment from 0 to 1 has been divided into ticks every fifths (1/5) and sevenths (1/7). What is the least possible distance between any o...

- by Tagne

Thu Mar 17, 2011 6:23 pm- Forum: Problem Solving
- Topic: Algebra
- Replies:
**6** - Views:
**1196**

##### Data Sufficiceny

1. In the xy-plane, line k pass through the points (1,1) and line m passes through the points (1,-1). Are the lines k and m perpendicular to each other?

a. Lines k and m intersect at the point (1,-1)

b. Line k intersects the x axis at the point (1,0)

2. If zt < -3, is Z<4?

a. Z<9

b. T<-4

- by Tagne

Thu Mar 17, 2011 6:22 pm- Forum: Problem Solving
- Topic: Data Sufficiceny
- Replies:
**6** - Views:
**965**

Using your logic / example, assuming x =2 and y =-3, x^2=4 and y^2=9. Therefore is st1 not insufficient?

- by Tagne

Thu Mar 17, 2011 5:24 pm- Forum: Problem Solving
- Topic: Data Sufficiency
- Replies:
**3** - Views:
**918**

##### Algebra

1. If 0<r<1<s<2, which of the following must be less than 1? a. r/s b. rs c. s â€“ r 2. In the arithmetic sequence t1, t2, t3, â€¦â€¦..tn,â€¦.t1 = 23 and tn = tn-1 - 3 for n > 1. What is the value of n when tn = -4. a. -1 b. 7 c. 10 d. 14 e. 20 3. If n is a positive integer and the product of all th...

- by Tagne

Thu Mar 17, 2011 2:09 pm- Forum: Problem Solving
- Topic: Algebra
- Replies:
**5** - Views:
**908**

##### Data Sufficiency

1. On a number line, if the number k is to the left of the number t, the product kt to the right of t?

a. T < 0

b. K < 1

2. is IxI > IyI ?

a. X^2 > Y^2

b. X > Y

- by Tagne

Thu Mar 17, 2011 2:08 pm- Forum: Problem Solving
- Topic: Data Sufficiency
- Replies:
**3** - Views:
**918**